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Volgvan
3 years ago
10

What is a hypothesis

Chemistry
2 answers:
Akimi4 [234]3 years ago
5 0

B: a proposed explanation for what is observed. i took the test

zmey [24]3 years ago
4 0
<span>A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.</span>
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Word equation of nitrogen + oxygen —--&gt; ammonia
katrin [286]

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it is ammonia nitro oxide

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2 years ago
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(GIVING BRAINLIEST) do what the following image says.
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hope it helps.

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A sample of helium gas initially at 37.0°C, 785 torr and 2.00 L was heated to 58.0°C while the volume expanded to 3.24 L. What i
spayn [35]

Answer:

0.681 atm

Explanation:

To solve this problem, we make use of the General gas equation.

Given:

P1 = 785 torr

V1 = 2L

T1 = 37= 37 + 273.15 = 310.15K

P2 = ?

V2 = 3.24L

T2 = 58 = 58+273.15 = 331.15K

P1V1/T1 = P2V2/T2

Now, making P2 the subject of the formula,

P2 = P1V1T2/T1V2

P2 = [785 * 2 * 331.15]/[310.15 * 3.24]

P2 = 515.715 Torr

We convert this to atm: 1 torr = 0.00132 atm

515.715 Torr = 515.715 * 0.00132 = 0.681 atm

8 0
3 years ago
What's the Balance equation for:<br>_C4H10O +_ O2---&gt;_CO2+_H20​
steposvetlana [31]

Answer:

C₄H₁₀O + 6O₂ ⇒ 4CO₂ + 5H₂O

Explanation:

Match the amount of reactants and products on both sides of the equation.

3 0
3 years ago
6 How many moles are in a 321 g sample of magnesium?
Tatiana [17]

Answer:

13.4mol of Mg

Explanation:

Given parameters:

Mass of magnesium = 321g

Unknown:

Number of moles  = ?

Solution:

The number of moles of a substance is given as;

  Number of moles  = \frac{mass}{molar mass}  

 Molar mass of Mg = 24g/mol

 Insert the parameters and solve;

        Number of moles  = \frac{321}{24}   = 13.4mol of Mg

3 0
3 years ago
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