Two elemets `X(` atomic weight `=75)` and `Y(` atomic weight `=16)` combine to give a compound having `75.8%` X.` The formula of the compound is

Two elemets `X(` atomic weight `=75)` and `Y(` atomic weight `=16)` combine to give a compound having `75.8%` X.` The formula of the compound is
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Two elemets `X(` atomic weight `=75)` and `Y(` atomic weight `=16)` combine to give a compound having `75.8%` X.` ... C. `X_(2)Y_(2)` D. `X_(2)Y_(3)`
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Two elemets `X(` atomic weight `=75)` and `Y(` atomic weight `=16)` combine to give a compound having `75.8%` X.` The formula of the compound is

Description : Two elemets `X(` atomic weight `=75)` and `Y(` atomic weight `=16)` combine to give a compound having `75.8%` X.` The formula of the compound is

Last Answer : Two elemets `X(` atomic weight `=75)` and `Y(` atomic weight `=16)` combine to give a compound having `75.8%` X. ... B. `xy_(2)` C. xy D. `x_(3)y_(3)`

Two element X (at. Mass = 75) and Y (at. Mass = 16) combine to give a compound having 75.8% of X. the formula of the compound is :-

Description : Two element X (at. Mass = 75) and Y (at. Mass = 16) combine to give a compound having 75.8% of X. the formula of the compound is :-

Last Answer : Two element X (at. Mass = 75) and Y (at. Mass = 16) combine to give a compound having 75.8% of X. the formula of ... ` C. `X_(2)Y_(2)` D. `X_(2)Y_(3)`

A gaseous organic compound that is best known for its use in preservative solutions has the chemical formula HCHO (read: H - C - H CHEM-92; Short Answer: Give me the name and atomic number of the element I am thinking about. It occupies the same column in the periodic table as selenium. Under standard conditions of temperature and pressure this element is a clear, odorless gas. This element is one of the essential ingredients in the burning process.

Description : A gaseous organic compound that is best known for its use in preservative solutions has the chemical formula HCHO (read: H - C - H CHEM-92; Short Answer: Give me the name and atomic number ... element is a clear, odorless gas. This element is one of the essential ingredients in the burning process.

Last Answer : ANSWER: OXYGEN ATOMIC NUMBER = 8

An organic compound ("X") is a disubstituted benzene containing 77.8% carbon and 7.4 % hydrogen. Heating an alkaline solution of "X" with chloroform g

Description : An organic compound ("X") is a disubstituted benzene containing 77.8% carbon and 7.4 % hydrogen. Heating an alkaline solution of "X" with chloroform g

Last Answer : An organic compound ("X") is a disubstituted benzene containing 77.8% carbon and 7.4 % hydrogen. Heating an alkaline ... "Z". "Z" is A. B. C. D.

Rupesh invests Rs. 45,000 partly in Rs. 150 shares at Rs. 180 for 8% and partly in Rs. 75 shares at Rs. 135 for 12%. If the annual income from the inv

Description : Rupesh invests Rs. 45,000 partly in Rs. 150 shares at Rs. 180 for 8% and partly in Rs. 75 shares at Rs. 135 for 12%. If the annual income from the inv

Last Answer : Rupesh invests Rs. 45,000 partly in Rs. 150 shares at Rs. 180 for 8% and partly in Rs. 75 ... investments made by Rupesh in the two types of sphares.

Atomic mass of Sulphur is 32u. The number of moles in 16 games of Sulphur is: (1) 1 mole of Sulphur (2) 0.5 moles of Sulphur (3) 0.75 moles of Sulphur (4) 0.25 moles of Sulphur

Description : Atomic mass of Sulphur is 32u. The number of moles in 16 games of Sulphur is: (1) 1 mole of Sulphur (2) 0.5 moles of Sulphur (3) 0.75 moles of Sulphur (4) 0.25 moles of Sulphur

Last Answer : (2) 0.5 moles of Sulphur Explanation: The molar mass of a com pound is equal to the sum of the atomic masses of its con stituent atoms in g/mol.

A compound X of the formula `C_(2)H_(6)O` on reaction with Na metal gave Y, X also reacts with `PC1_(5)` to give Z the product obtained in the reactio

Description : A compound X of the formula `C_(2)H_(6)O` on reaction with Na metal gave Y, X also reacts with `PC1_(5)` to give Z the product obtained in the reactio

Last Answer : A compound X of the formula `C_(2)H_(6)O` on reaction with Na metal gave Y, X also reacts with `PC1_(5)` to ... )H_(5)` D. `C_(2)H_(5)OC_(2)H_(5)`

For the compound `A-CH_(2)-CH_(27)-A` draw the newman projection formula of all the stable conformational it `mu_(obs) = 2D " and " X_(anti) = 0.75 "

Description : For the compound `A-CH_(2)-CH_(27)-A` draw the newman projection formula of all the stable conformational it `mu_(obs) = 2D " and " X_(anti) = 0.75 "

Last Answer : For the compound `A-CH_(2)-CH_(27)-A` draw the newman projection formula of all the stable conformational it ` ... " mu_(gauche.)("If "A= NO_(2))`

A compound possesses 8% sulphur by mas. The least molecular mass is :-

Description : A compound possesses 8% sulphur by mas. The least molecular mass is :-

Last Answer : A compound possesses 8% sulphur by mas. The least molecular mass is :- A. 200 B. 400 C. 155 D. 355

An organic compound contain 69% carbon and 4.8% hydrogen, the remaining being oxygen. Calculate the masses of carbon dioxide and water produced when 0.20g of this substance is subjected to complete combustion.

Description : An organic compound contain 69% carbon and 4.8% hydrogen, the remaining being oxygen. Calculate the masses of carbon dioxide and water produced when 0.20g of this substance is subjected to complete combustion.

Last Answer : Calculation of mass of CO2 produced: Mass of compound =0.20g %C =12 x C 69=12*mass of CO2 formed*100/44*0.2 Mass of CO2 formed =69*44*.2/12*100 = 0.506g Similarly, % H =2* mass of H2Oformed*100/18* ... compound 4.8=2* mass of H2Oformed*100/18* 0.2 Mass of H2Oformed =4.8*18*0.2/2*100 =0.0864g

The area of the triangular region, in the following figure, bounded by the lines 2x-y=1 and x+2y=13 and Y-axis is (a) 11.25 sq.units (b) 9.75 sq.units (c) 16.25 sq,units (d) 18.75 sq.units

Description : The area of the triangular region, in the following figure, bounded by the lines 2x-y=1 and x+2y=13 and Y-axis is (a) 11.25 sq.units (b) 9.75 sq.units (c) 16.25 sq,units (d) 18.75 sq.units

Last Answer : (a) 11.25 sq.units

Find: (i) 32% of 425 (ii) 1623% of 16 (iii) 6.5% of 400 (iv) 136% of 70 (v) 2.8% of 35 (vi) 0.6% of 45 -Maths

Description : Find: (i) 32% of 425 (ii) 1623% of 16 (iii) 6.5% of 400 (iv) 136% of 70 (v) 2.8% of 35 (vi) 0.6% of 45 -Maths

Last Answer : answer:

A sum of Rs. 1550 was lent partly at 5% and partly at 8% per annum simple interest. The total interest received after 4 yr was Rs. 400. The ratio of the money lent at 8% to that lent at 5% is? (a) 15:16 (b) 16:17 (c) 19:17 (d) 21:26 (e) 20:17

Description : A sum of Rs. 1550 was lent partly at 5% and partly at 8% per annum simple interest. The total interest received after 4 yr was Rs. 400. The ratio of the money lent at 8% to that lent at 5% is? (a) 15:16 (b) 16:17 (c) 19:17 (d) 21:26 (e) 20:17

Last Answer : (a) 15:16

The simplest formular of a compound containing 50% of element X (atomic mass 10) and 50% pf element Y (atomic mass 20) is :-

Description : The simplest formular of a compound containing 50% of element X (atomic mass 10) and 50% pf element Y (atomic mass 20) is :-

Last Answer : The simplest formular of a compound containing 50% of element X (atomic mass 10) and 50% pf element Y (atomic mass 20) ... C. `XY_(3)` D. `X_(2)Y_(3)`

The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively. a) Calculate the average atomic mass of elements X and Z. b) How is the average atomic mass of elements X and Z compare with the atomic mass of element Y? c) Which law of classification of elements is illustrated by this example? d) Give another example of a set of elements which are classified according to this law.

Description : The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively. a) Calculate the average atomic mass of elements X and Z. b) How is the ... this example? d) Give another example of a set of elements which are classified according to this law.

Last Answer : a) The average atomic mass of X and Z = 7 39 2 46 2 23 b) The average atomic mass of X and Z is equal to the atomic mass of Y c) The law illustrated in this example is Dobereiner’s law of triads. d) Another example of Dobereiner’s law is Calcium, Strontium and Barium.

What is the molecular mass of a gas that effuses through a small hole at twice the rate as oxygen gas at the same temperature. (The molecular mass of O2 is 32.) w) 8.0 atomic mass units x) 16 atomic mass units y) 48 atomic mass units z) 64 atomic mass units

Description : What is the molecular mass of a gas that effuses through a small hole at twice the rate as oxygen gas at the same temperature. (The molecular mass of O2 is 32.) w) 8.0 atomic mass units x) 16 atomic mass units y) 48 atomic mass units z) 64 atomic mass units

Last Answer : ANSWER: W -- 8.0 ATOMIC MASS UNITS

On analysis, a certain compound was found to contain 254 g of iodine (at. Mass 127) and 80 g oxygen (at. Mass 16). What is the formula of the compound

Description : On analysis, a certain compound was found to contain 254 g of iodine (at. Mass 127) and 80 g oxygen (at. Mass 16). What is the formula of the compound

Last Answer : On analysis, a certain compound was found to contain 254 g of iodine (at. Mass 127) and 80 g oxygen (at. Mass 16). ... C. `I_(5)O_(3)` D. `I_(2)O_(5)`

If a metal X with valency 3 combines with a non-metal Y with a valency 2, what will be the formula of the compound formed when X and Y combines?

Description : If a metal X with valency 3 combines with a non-metal Y with a valency 2, what will be the formula of the compound formed when X and Y combines?

Last Answer : 1

A compound 'X' of the formula `C_(3)H_(8)O` gives iodoform test. On oxidation with acidified `K_(2)Cr_(2)O_(7)X` gave Y. Y also gives iodogorm test. T

Description : A compound 'X' of the formula `C_(3)H_(8)O` gives iodoform test. On oxidation with acidified `K_(2)Cr_(2)O_(7)X` gave Y. Y also gives iodogorm test. T

Last Answer : A compound 'X' of the formula `C_(3)H_(8)O` gives iodoform test. On oxidation with acidified `K_(2)Cr_(2) ... ` D. `CH_(3)COCH_(3), CH_(3)CHOHCH_(3)`

A compound X with moleuclar formula `C_(3)H_(8)O` can be oxidized to a compoud Y with the molecular formula `C_(3)H_(6)O_(2)`. X is most likely to be

Description : A compound X with moleuclar formula `C_(3)H_(8)O` can be oxidized to a compoud Y with the molecular formula `C_(3)H_(6)O_(2)`. X is most likely to be

Last Answer : A compound X with moleuclar formula `C_(3)H_(8)O` can be oxidized to a compoud Y with the molecular ... Aldehye B. Alcohol C. Ether D. Both 2 and 3

Which of the following elements would form an acid oxide with the formula XO2 and an acidic compound with hydrogen with the formula XH2? w) Sodium x) Magnesium y) Aluminum z) Sulfur

Description : Which of the following elements would form an acid oxide with the formula XO2 and an acidic compound with hydrogen with the formula XH2? w) Sodium x) Magnesium y) Aluminum z) Sulfur

Last Answer : ANSWER: Z -- SULFUR

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

What is a chemical reaction in which 2 elements combine to form a compound is called?

Description : What is a chemical reaction in which 2 elements combine to form a compound is called?

Last Answer : Feel Free to Answer

What chemical compound is formed when sodium atoms combine with hydroxide groups?

Description : What chemical compound is formed when sodium atoms combine with hydroxide groups?

Last Answer : A group hydroxide doesn't exist.

Consider two water drops at a temperature T. These drops are NOT allowed to exchange energy with their environment. These two drops collide and combine. How does the temperature of these drops change when they combine? Does it: w) decrease x) remain the same y) increase

Description : Consider two water drops at a temperature T. These drops are NOT allowed to exchange energy with their environment. These two drops collide and combine. How does the temperature of these drops change when they combine? Does it: w) decrease x) remain the same y) increase

Last Answer : ANSWER: Y -- INCREASE

It has been said that the universe will die an "entropy death". This means that: w) the universe will eventually explode. x) the universe will be at the same temperature everywhere. y) the universe will collapse into a black hole. z) matter and antimatter will never combine.

Description : It has been said that the universe will die an "entropy death". This means that: w) the universe will eventually explode. x) the universe will be at the same temperature everywhere. y) the universe will collapse into a black hole. z) matter and antimatter will never combine.

Last Answer : ANSWER: X -- THE UNIVERSE WILL BE AT THE SAME TEMPERATURE EVERYWHERE.  

A simply supported wooden beam 150 cm long and having a cross section 16 cm × 24 cm carries a concentrated load, at the centre. If the permissible stress ft = 75 kg/cm2 and fs= 10 kg/cm2 the safe load is (A) 3025 kg (B) 3050 kg (C) 3075 kg (D) 3100 kg

Description : A simply supported wooden beam 150 cm long and having a cross section 16 cm × 24 cm carries a  concentrated load, at the centre. If the permissible stress ft = 75 kg/cm2  and fs= 10 kg/cm2  the safe  load is  (A) 3025 kg  (B) 3050 kg  (C) 3075 kg  (D) 3100 kg 

Last Answer : (C) 3075 kg 

Which material is suitable for shaft material? a. High speed steel b. Stainless steel or high carbon steel c. Grey cast iron d. Steel having approx. 0.4% carbon and 0.8% manganese

Description : Which material is suitable for shaft material? a. High speed steel b. Stainless steel or high carbon steel c. Grey cast iron d. Steel having approx. 0.4% carbon and 0.8% manganese

Last Answer : d. Steel having approx. 0.4% carbon and 0.8% manganese

Explain higher and lower calorific value of a coal having following composition by mass Carbon 81%,Hydrogen 7%, Oxygen 8%,Nitrogen 2.5%, sulphur 1.5% and remaining is ash

Description : Explain higher and lower calorific value of a coal having following composition by mass Carbon 81%,Hydrogen 7%, Oxygen 8%,Nitrogen 2.5%, sulphur 1.5% and remaining is ash

Last Answer : Carbon C = 81% = 0.81 Hydrogen = H2 = 7% = 0.07 Oxygen = O2 = 8% = 0.08 Nitrogen = N = 2.5% = 0.025 Sulphur = S =1.5% = 0.015 Ash = 2.5% = 0.025 Dulong's formula: H.C.V. of coal = 33800 C + 144500 ... = H.C.V.- 9H2 x 2442 KJ / Kg = 36187.5- 9 x 0.07 x 2442 L.C.V. of coal = 34649.04 KJ / Kg 

A portfolio comprises of two stocks A and B. Stock A gives a return of 8%and stock B gives a return of 7%. Stock A has a weight of 60% in the portfolio. What is the portfolio return? A. 9% B. 11% C. 10% D. 8%

Description : A portfolio comprises of two stocks A and B. Stock A gives a return of 8%and stock B gives a return of 7%. Stock A has a weight of 60% in the portfolio. What is the portfolio return? A. 9% B. 11% C. 10% D. 8%

Last Answer : D. 8%

Adult human brain is about-----% of the total body weight. A. 2% (Answer) B. 3% C. 7% D. 8%

Description : Adult human brain is about-----% of the total body weight. A. 2% (Answer) B. 3% C. 7% D. 8%

Last Answer : A. 2% (Answer)

The volume of Blood in a Human body to be approximately ----- of body weight? A. 6% B. 7% (Answer) C. 8% D. 9%

Description : The volume of Blood in a Human body to be approximately ----- of body weight? A. 6% B. 7% (Answer) C. 8% D. 9%

Last Answer : B. 7% (Answer)

According to IS 399-1963, the weight of the timber is specified at (A) 8% moisture content (B) 10% moisture content (C) 12% moisture content (D) 14% moisture content

Description : According to IS 399-1963, the weight of the timber is specified at (A) 8% moisture content (B) 10% moisture content (C) 12% moisture content (D) 14% moisture content

Last Answer : Answer: Option C

Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed

Description : Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed

Last Answer : Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed A. 8 B. 10 C. 12 D. 6

Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed

Description : Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed

Last Answer : Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed A. 8 B. 10 C. 12 D. 6

The compound having the formula H2N—CO—NH—CH2—CH2—CH2—CH— COOH is | NH2 (A) Lysine (B) Glutamine (C) Serine (D) Citrulline

Description : The compound having the formula H2N—CO—NH—CH2—CH2—CH2—CH— COOH is | NH2 (A) Lysine (B) Glutamine (C) Serine (D) Citrulline

Last Answer : Answer : D

Compound having the same molecular formula but different structural formula are called?

Description : Compound having the same molecular formula but different structural formula are called?

Last Answer : Isomers

Having multiple perceptrons can actually solve the XOR problem satisfactorily: this is because each perceptron can partition off a linear part of the space itself, and they can then combine their results. a) True – this works always, and these multiple perceptrons learn to classify even complex problems. b) False – perceptrons are mathematically incapable of solving linearly inseparable functions, no matter what you do c) True – perceptrons can do this but are unable to learn to do it – they have to be explicitly hand-coded d) False – just having a single perceptron is enough

Description : Having multiple perceptrons can actually solve the XOR problem satisfactorily: this is because each perceptron can partition off a linear part of the space itself, and they can then combine their results. ... have to be explicitly hand-coded d) False - just having a single perceptron is enough

Last Answer : c) True – perceptrons can do this but are unable to learn to do it – they have to be explicitly hand-coded

34.8% x 950 – 33.2% of 850 = ? a) 58.4 b) 48.4 c) 56.4 d) 68.9 e) 76.3

Description : 34.8% x 950 – 33.2% of 850 = ? a) 58.4 b) 48.4 c) 56.4 d) 68.9 e) 76.3

Last Answer : 34.8% x 950 – 33.2% of 850 = ? Sol: 0.348 x 950 – 0.332 x 850=? 330.6 – 282.2=? ?= 48.4 Answer: b)

A radioactive atom `X` emits a `beta-`particle to produce an atom `Y` which then emits an Particle to give an atom `Z` (1) the atomic number of `X` is

Description : A radioactive atom `X` emits a `beta-`particle to produce an atom `Y` which then emits an Particle to give an atom `Z` (1) the atomic number of `X` is

Last Answer : A radioactive atom `X` emits a `beta-`particle to produce an atom `Y` which then emits an Particle to give ... C. 2 and 3 are correct D. 3 is correct

When cathode rays strike a target of high atomic weight, they give rise to – 1) α -rays (2) β and γ rays (3) X-rays (4) positive rays

Description : When cathode rays strike a target of high atomic weight, they give rise to – 1) α -rays (2) β and γ rays (3) X-rays (4) positive rays

Last Answer : (3) X-rays Explanation: When cathode rays strike a solid target of high atomic weight and high melting point such as tungsten, molybdenum, etc, they give rise to a highly pen-etrating radiation called the X-rays (LIT Physics by Dr. P.K Aganval).

Give the formula of a compound in which carbon exhibit an oxidation state of : A. +4  B. +2  C. -4

Description : Give the formula of a compound in which carbon exhibit an oxidation state of : A. +4  B. +2  C. -4

Last Answer : Give the formula of a compound in which carbon exhibit an oxidation state of : A. +4 B. +2 C. -4

Why cant there be no such compound as CBr5 give an acceptable chemical formula for a compound that is made of only carbon and bromine?

Description : Why cant there be no such compound as CBr5 give an acceptable chemical formula for a compound that is made of only carbon and bromine?

Last Answer : Carbon atoms have 4 valence electrons, so it can form only 4 bonds. CBr5 would require carbon to form 5 bonds. A molecule composed of carbon and bromine atoms would be CBr4, which is carbon tetrabromide.

Give the EMPIRICAL formula for the organic compound cyclopentene.

Description : Give the EMPIRICAL formula for the organic compound cyclopentene.

Last Answer : ANSWER: C5H8 

Give me the formula for the organic compound cyclobutene.

Description : Give me the formula for the organic compound cyclobutene.

Last Answer : ANSWER: C4H6 

Give the empirical formula for the organic compound naphthalene?

Description : Give the empirical formula for the organic compound naphthalene?

Last Answer : ANSWER: C10H8

The natural element having highest atomic weight?

Description : The natural element having highest atomic weight?

Last Answer : Uranium

Deuterium differs from Hydrogen in having: A. Different atomic number but same atomic weight B. Different atomic number and different atomic weight C. Same atomic number and different atomic weight (Answer) D. None

Description : Deuterium differs from Hydrogen in having: A. Different atomic number but same atomic weight B. Different atomic number and different atomic weight C. Same atomic number and different atomic weight (Answer) D. None

Last Answer : C. Same atomic number and different atomic weight (Answer)

What is combine operation? Give two examples of combined operations.

Description : What is combine operation? Give two examples of combined operations.

Last Answer : Combined Operation: 1. In order to save the operation and setting time of part, while the part is subjected to machining process, the different operations to be performed are combined together or ... etc. 2. Integration Method: Operation on turret lathe, multi spindle automats, CNC operations etc.