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kirill [66]
3 years ago
10

0.315 to scientific notation

Chemistry
2 answers:
irga5000 [103]3 years ago
7 0

Answer:

3.15 × 10^-1

or

3.15E-1

Explanation:

Elden [556K]3 years ago
4 0
3.15x10^-1
Explanation:
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You have two sealed jars of water at the same temperature. In the first jar there is a large amount of water. In the second jar
melisa1 [442]

since both the jars are kept at the same temperature the vapor pressure will be same in both the cases.


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3 years ago
Two pieces of iron with the different masses - 500 g and 1000 g - both have 4.5 kJ of energy added to them.
jok3333 [9.3K]

Answer:

1000g

Explanation:because the higher mass takes up heat.

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Silicon carbide (SiC) is an important ceramic material made by reacting sand (silicon dioxide, SiO2) with powdered carbon at a h
makkiz [27]

Answer:

Percent yield of SiC is 77.0%.

Explanation:

Balanced reaction: SiO_{2}+3C\rightarrow SiC+2CO

Molar mass of SiC = 40.11 g/mol

Molar mass of SiO_{2} = 60.08 g/mol

So, 100.0 kg of SiO_{2} = \frac{100.0\times 10^{3}}{60.08} moles of SiO_{2} = 1664 moles of SiO_{2}

According to balanced equation, 1 mol of SiO_{2} produces 1 mol of SiC

Therefore, 1664 moles of SiO_{2} produce 1664 moles of SiC

Mass of 1664 moles of SiC = (1664\times 40.11)g = 66743g = 66.74 kg (4 sig. fig.)

Percent yield of SiC = [(actual yield of SiC)/(theoretical yield of SiC)]\times 100%

                                 = \frac{51.4kg}{66.74kg}\times 100 %

                                 = 77.0%

4 0
3 years ago
What two elements are the least abundant by volume in the crust
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potassium and magnesium

8 0
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s 32 so my answer is S P F

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