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3 years ago

List three things that rely on the Sun as the major source of energy

Chemistry

2 answers:

valkas [14]3 years ago

6 0

Answer:

Three things that rely on the sun for energy is coal,oil, and natural gases

Explanation:

We use engery too cook our food that's an example of how gases are used.

We run our cars .Cars use oil.

And we use electricity for lights. You need coal for the electricity

Ede4ka [16]3 years ago

4 0

Answer:

*Sun sends oxygen so all living kind (humans, plants, animals etc.) can live

*The sun sends heat to the earth so it wouldnt freeze

*We can use the sun as to create solar energy

Explanation: I hope this helps <3

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KCl and KBr are both ionic solids. A mixture of KCl and KBr has a mass of 3.595 g. When this mixture is heated in the presence o

monitta

Answer:

The percentage (by mass) of KBr in the original mixture was 33.1%.

Explanation:

The mixture of KCl and KBr has a mass of 3.595g, thus the sum of the moles of KCl (x) multiplied by it molar mass (74.5g/mol) and the moles of KBr (y) multiplied by it molar mass (119g/mol) is the total mass of the mixture:

$x.74.5g/mol + y.119g/mol = 3.595g$

Also, after the conversion of KBr into KCl, the total mass of 3.129 g is only from KCl moles, hence

$\frac{3.129g}{74.5g/mol} = 0.042 moles$

But the 0.042 moles came from the originals KCl and KBr moles, thus

$x + y = 0.042moles$

Now it is possible to propose a system of equations:

$x.74.5g/mol + y.119g/mol = 3.595g$

$x + y = 0.042moles$

Solving the system of equations,

$x=0.032moles\\y=0.010 moles$

0.010 moles of KBr multiplied it molar mass is

$0.010molesx119g/mol = 1.19g$

Therefore, the percentage (by mass) of KBr in the original mixture was:

$\frac{1.19g}{3.595g}x100% = 33.1%$ %

4 0

3 years ago

A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24

Degger [83]

The partial pressure of hydrogen is 0.31 atm

calculation

find the number of hydrogen moles the container, that is

25/100 x 6.4 =1.6 moles of hydrogen

find the partial pressure for hydrogen in 1.6 moles

that is 6.4 moles= 1.24 atm
1.6 moles= ?

by cross multiplication

1.6moles x1.24 atm/ 6.4 moles= 0.31 atm

6 0

3 years ago

Under which set of conditions would the behavior of a gas be least ideal and least likely to follow the ideal gas law ?

LuckyWell [14K]

Answer: option A. 350 K and 0.30 atm

Explanation: a gas behaves as an ideal gas at higher temperature and low pressure

4 0

2 years ago

Read 2 more answers

Farmers who raise cotton once used arsenic acid, H₃AsO₄, as a defoliant at harvest time. Arsenic acid is a polyprotic acid with

Stels [109]

Explanation: