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2 years ago

Use the drop-down menus to choose the correct answer to complete each statement.

Chemistry

2 answers:

Yakvenalex [24]2 years ago

6 0

Answer:

moon, planet, planet

Explanation:

moons revolve around planets

Jupiter is considered a planet because it revolves the sun

and a planet is a body that revolves a star a dwarf planet doesn't revolve around a star

Alexxandr [17]2 years ago

4 0

Answer:

THIS IS WRONG 0.0

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Explanation:

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Metric dimensional analysis worksheet problem: 645 kg to g

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Answer:

645000 grams my dude

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2 years ago

Salt is dissolved in a flask of tap water. Distilling the mixture causes the salt to separate from the water. Which type of ener

Alik [6]

Heat energy is required.
In distillation, the solution is first heated, where heat energy is required, such as using a bunsen burner.
When the solution is heated, the water may reach its boiling point and evaporate. However, salt does not. When water molecules evaporates, it travels through a condenser that cools it down into liquid again. Therefore we get pure water. Salt is also obtained in the original beaker.
Therefore to first start this process, heat energy is required.

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3 years ago

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WRITING AND BALANCING EQUATIONS

Natasha2012 [34]

Answer:

CaCO3 + 2HCl —> CaCl2 + CO2 + H2O

Explanation:

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3 years ago

8. Calculate the number of moles of eachsubstance.a. 5.45 x 1026 particles of methane, CH4

Klio2033 [76]

<em>ANSWER</em>

The number of moles of methane is 905.32 moles

STEP-BY-STEP EXPLANATION:

Given information

The number of particles of methane = 5.45 x 10^26 particles

Let x represents the number of moles of methane

To calculate the number of moles, we will be using the below formula

$\text{Number of particles = number of moles x Avogadro's constant}$

Recall that, the Avogadro's constant is given as

$6.02\cdot10^{23}$ $\begin{gathered} 5.45\cdot10^{26}\text{ = x }\cdot\text{ 6.02 }\cdot10^{23} \\ \text{Divide both sides by 6.02 }\cdot10^{23} \\ x\text{ = }\frac{5.45\cdot10^{26}}{6.02\cdot10^{23}} \\ x\text{ = }\frac{5.45}{6.02}\cdot10^{26\text{ - 23}} \\ x\text{ = 0.9053 }\cdot10^3 \\ x\text{ = 905.32 moles} \end{gathered}$

Therefore, the number of moles of methane is 905.32 moles

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1 year ago

What is the effect of adding heat to a gas at constant pressure?

Anna007 [38]

The pressure will continue to build up eventually causing a release of pressure or an explosion.

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2 years ago