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Anit [1.1K]
3 years ago
15

CH4 + 2O2 CO2 + 2H2O + Heat

Chemistry
2 answers:
malfutka [58]3 years ago
8 0

Answer:The answer is c releases heat.

Explanation:

Murljashka [212]3 years ago
7 0
D. Heat is absorbed by the reaction
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Calculate the number of atoms of bromine in 1.37 g of bromine. Give your answer in scientific notation. Enter your answer in the
steposvetlana [31]

<u>Answer:</u> The number of atoms of bromine present in given number of mass is 1.03\times 10^{22}

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of bromine = 1.37 g

Molar mass of bromine = 79.904 g/mol

Putting values in above equation, we get:

\text{Moles of bromine}=\frac{1.37g}{79.904g/mol}=0.0171mol

According to mole concept:

1 mole of an element contains 6.022\times 10^{23} number of atoms.

So, 0.0171 moles of bromine will contain = 0.0171\times 6.022\times 10^{23}=1.03\times 10^{22} number of bromine atoms.

Hence, the number of atoms of bromine present in given number of mass is 1.03\times 10^{22}

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4 years ago
You have lost nearly 6 inches of top soil on your 200 acre field in the last 10 years. The problem seems to be getting even wors
qaws [65]
You could consider building an irrigation system.
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3 years ago
What is Matter and give the examples​
Paha777 [63]

Answer:

Matter is a substance that has inertia and occupies physical space.

Matter is literately in <u>everything</u>

Explanation:

Examples of matter:

Your body

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Things that are <u>not</u> matter are:

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Sounds

There <u>not</u> matter because you <u>cant touch, smell or taste them</u>.

7 0
2 years ago
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E85 fuel is a mixture of 85% ethanol and 15% gasoline by volume. What mass in kilograms of E85 (d = 0.758 g/mL) can be contained
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The answer is: mass is 40.17 kilograms.

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1 gal = 3785.41 mL.

V = 14 gal · 3785.41 mL:

V = 52995.74 mL.

m = 52995.74 mL · 0.758 g/mL.

m = 40170.77 g; mass of fuel.

m = 40170.77 g ÷ 1000 g/kg.

m = 40.17 kg.

7 0
4 years ago
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You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain
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The lightbulb contains 40 hours.
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