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2 years ago

3. (10 Points) You buy a helium balloon of 14 Liters for your friend's birthday and

Chemistry

1 answer:

vesna_86 [32]2 years ago

7 0

Answer: picture shows work for # 1,2,4,5,7

Explanation:

number 3: as the pressure in the volume decreases, the volume increases causing it to expand and eventually blow.

number 6: because the temperature and the amount of gas don’t change, these terms don’t appear in the equation. What Boyle’s law means is that the volume of a mass of gas is inversely proportional to its pressure. This linear relationship between pressure and volume means doubling the volume of a given mass of gas decreases its pressure by half.

hope this helps :))

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Methane gas reacts with oxygen in a gas stove.

nekit [7.7K]

Hey there!

CH₄ + 2O₂ → CO₂ + 2H₂O

carbon dioxide: product

methane: reactant

oxygen: reactant

water: product

Methane and oxygen are reactants because they are the substances we start with. They are on the side of the equation that the arrow is pointing away from.

Carbon dioxide and water are products because they are the new substances that are the yields of the equation. They are on the side of the equation that the arrow is pointing towards.

Hope this helps!

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2 years ago

Predict the products and then balance the equation

Aneli [31]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

Here's the balanced equation for given Double displacement reaction ~

$\sf Pb(NO_3)_2 +2 \: KI = PbI_2 +2 \: KNO_3$

The products fored are : Lead Iodide ( PbI2 ) and Potassium Nitrate ( KNO3 )

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2 years ago

Read 2 more answers

How many moles are in 20 grams of Ca (Calcium)? *

Flura [38]

Answer:

0.49903 mol

Explanation:

5 0

2 years ago

Hiw many moles of 12c in 3.50g

Olenka [21]

3.50 grams carbon 12 (1 mole C(12)/12.0 grams)(6.022 X 10^23/1 mole C(12))

<span>= 1.76 X 10^23 atoms</span>

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3 years ago

Heat energy is useful to us in all the following ways except:

Lelechka [254]

Answer:

Heat energy is transferred to cooler objects to reduce the temperature of those objects.

Explanation:

The fourth option is not correct.

A correct way of writing it would be : " Heat energy is transferred from cooler objects to reduce the temperature of those objects.". When an object loses heat energy, its temperature reduces. Conversely, when an object receives heat energy, its temperature increases.

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3 years ago