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mash [69]
3 years ago
10

Rate 2021 so far 1/5 2/5 3/5 4/5 5/5

Chemistry
2 answers:
Naddik [55]3 years ago
4 0

Answer:

Is this an actual question that you had for school?

Explanation:

djyliett [7]3 years ago
4 0

Answer:

3/5. Its still really stressful but at least it's better than 2020.

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What is the mass of 500 mL of<br> 1.0 M of H2O?
Lena [83]

Answer:

In order to obtain a volume of

1 L

,

500 mL

of water must be added to the original solution of

500 L

.

Explanation:

4 0
3 years ago
Help calculating molar mass
Irina-Kira [14]
Molar mass can be determined by adding the atomic masses of each individual element, depending on how many times they appear. You can find how many times they appear by looking at their respective subscripts. Atomic masses of each element can be found on the periodic table.

For example, in #1

Multiply the mass of Lithium (6.941) by 4, because there are 4 lithium molecules.

Multiple the mass of Phosphorus (30.974) by 2 because there are 2 Phosphorus molecules.

And multiply the mass of oxygen (15.999) by 7 because there are 7 oxygen molecules.

After you have those values, add them together to find the total molar mass of the compound.
7 0
3 years ago
You may want to reference (Page) Section 12.4 while completing this problem. Enter the balanced chemical equation for the comple
alexandr1967 [171]

Answer:

See explanation

Explanation:

In this question, we have to remember that in all combustion reactions we will have <u>Oxygen</u> as reactive (O_2) and the products are <u>Carbon dioxide</u> (CO_2) and <u>Water</u> (H_2O). Additionally, for the states, we will have (l) for the <u>liquid state</u> and (g) for the <u>gas state</u>. So, we can analyze each reaction:

<u>Part A.</u>

The formula for nonane is C_9H_2_0, with this in mind we can write the combustion reaction:

C_9H_2_0_(_I_)~&#10;+~&#10;O_2~->~CO_2_(_g_)~&#10;+~H_2O_(_g_)

When we balance the reaction we will obtain:

C_9H_2_0_(_I_)~&#10;+~14 O_2_(_g_)~->~9CO_2_(_g_)~&#10;+~10H_2O_(_g_)

<u>Part B.</u>

The formula for 2-methylbutane is C_5H_1_2, with this in mind we can write the combustion reaction:

C5H12_(_I_)~&#10;+~O_2_(_g_)~->~CO_2_(_g_)~&#10;+~H2O_(_g_)

When we balance the reaction we will obtain:

C5H12_(_I_)~&#10;+~8O_2_(_g_)~->~5 CO_2_(_g_)~&#10;+~6 H2O_(_g_)

<u>Part C.</u>

The formula for 3-ethyltoluene is C_9H_1_2, with this in mind we can write the combustion reaction:

C_9H_1_2_(_I_)~+~O_2_(_g_)~->~CO_2_(_g_)~+~H2O_(_g_)

When we balance the reaction we will obtain:

C9H12_(_I_)~&#10;+~12O_2_(_g_)~->~9CO_2_(_g_)~&#10;+~6H2O_(_g_)

See figure 1 for further explanations.

I hope it helps!

8 0
3 years ago
What is the effect of climate on ice?<br>How does ice affect water systems?
zhenek [66]
The effect is that it melts the ice and affects the climate by not have drinking water
7 0
3 years ago
Read 2 more answers
which statement best explains why objects are pulled toward earths center? A. earth has a magnetic force that is strongest at it
Vesna [10]
A. Earth has a magnetic force that is strongest at its core.
6 0
3 years ago
Read 2 more answers
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