Skip to main content
K

Kelsie Sawayn

Feb 20, 2025

A chemist decomposes samples of several compounds. The masses of their constituent elements are listed. Calculate the chemical formula

A chemist decomposes samples of several compounds. The masses of their constituent elements are listed. Calculate the chemical formula for each compound
0
Save

2 Answers

H
Hermina Ferry

Feb 20, 2025

We need to know the molar masses of every element in the given compound first.a) 58.69 g = 1 mole of NiTherefore, 1.245 g = 0.0212 moles126.9 g = 1 mole of I Therefore, 5.381 g = 0.0424 molesRatio of Ni : I = 0.0212 / 0.0424 = 1 : 2Therefore, empirical formula is NiI2b) 137.327g = 1 mole of Ba2.677 g = 0.0195 moles 79.90 g = 1 mole of Br3.115 g = 0.0390 molesRatio of Ba : Br = 0.0195 / 0.0390 = 1 : 2Therefore, the empirical formula is BaBr2.c) 9.012 g = 1 mole of Be2.128 g = 0.236 moles32.065 g = 1 mole of S7.557 g = 0.236 moles15.999 g = 1 mole of O15.107 g = 0.944 molesTherefore, ratio of Be : S : O = 0.236 : 0.236 : 0.944 = 1 : 1 : 4Therefore, the empirical formula is BeSO4.... Show More
0

Want to answer this question?

Join our community to share your knowledge!

Log in Sign up

Categories

Tags

Related Questions

2
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of?

A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water...

3
1
2
A constraint with a positive slack value will have a positive dual price. will have a negative dual price. will have a dual price

A constraint with a positive slack value will have a positive dual price. will have a negative dual price. will have a d...

3
A consumer’s demand curve for a product is downsloping because:.a. total utility falls below marginal utility as more of a product

A consumer's demand curve for a product is downsloping because:.a. total utility falls below marginal utility as more of...

2
A conveyor belt carries supplies from the first floor to the second

a conveyor belt carries supplies from the first floor to the second floor which is 12 feet higher. The belt makes a 60 a...

2
A copper wire is 20m long on a winter day when the temperature is – 12 Degrees Celsius?

By how much does its length increase on a 26 Degrees Celsius} summer day?Express your answer using two significant figur...

1
A crane lifts the 15000 kg steel hull of a ship out of the water. (a) Determine the tension in the crane’s cable when the hull is submerged?

A crane lifts the 15000 kg steel hull of a ship out of the water.(a) Determine the tension in the crane’s cable when the...

1
A crane lifts the 18,000 kg steel hull ship out of the water.

A crane lifts the 18,000 kg steel hull ship out of the water.Density of steel is 7.8 x 10^3 kg/m^3 Density of water is 1...

4
A crate is pulled with a force of 165 N at an angle 30 °

A crate is pulled with a force of 165 N at an angle 30 °