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torisob [31]
3 years ago
14

An ionic compound has a very negative heat of solution in water. Would you expect it to be soluble or insoluble in water?.

Chemistry
1 answer:
ddd [48]3 years ago
8 0

Answer:

It will be Insolube in water

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Calculate how many methane molecules and how many carbon and hydrogen atoms are there in 25 g of Methane?​
sasho [114]

From the formula of methane it is clear that one mole of methane has 4hydrogen atoms. So, 37.6×1023 hydrogen atoms are there in 25.0 g of methane. Therefore, 9.4×1023methane molecules and 9.4×1023 hydrogen and 37.6×1023carbon atoms are there in 25.0 g of methane.

mark me brainliestt :))

5 0
3 years ago
HELP ME !!
lorasvet [3.4K]

Answer:

Yes

Explanation:

AsH3 contains a polar bond.

3 0
4 years ago
Race car <br> Mass is 1250 kilograms <br> Velocity is 2.3 m/s <br> What is the momentum?
dalvyx [7]

mass \: of \: the \: car \:  = 1250 \: kg \\  \\ velocity \: of \: the \: car \: is \:  = 2.3m/s \\  \\ formula \: to calculate \: momentum \:  \\  \\  \:  \:  \:  \: p = mv \:  \:  \: (m = mass \: and \: v = velocity) \\  \\ momentum \:  = 1250 \times 2.3 = 2875m/s

8 0
3 years ago
What is a limitation of using a chemical formula, such as C6H12O6, to represent a compound?
Kaylis [27]
The chemical formula does not show how the atoms are connected to one another.
When we write the chemical formula of any substance, we are not able to understand the spatial arrangement of that substance's atoms. This is extremely important in organic compounds, which exhibit different physical characteristics as well as different chemical characteristics due to the way their atoms are arranged in space. These isomers are known as enantiomers.
5 0
4 years ago
Read 2 more answers
In order to understand the prehistory of the Hawaiian island of Lana'i better, anthropologists Maria Sweeney, Melinda Allen, and
AleksandrR [38]

Answer:

500 years

Explanation:

The original carbon-14 was 100%, and after 100 years, it decays 1.202%. So after 100 years it goes to 98.798%, after more 100 years (200 years), it will be 97.596% (98.798 - 1.202), thus, after n 100 years "package", the percenatge will be:

100% - actual% = n*1.202

n = (100% - actual%)/1.202

n = (100% - 94%)/1.202

n = 4.992

So, the number of years is n*100 = 4.992*100 = 499.2 ≅ 500 years.

4 0
3 years ago
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