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Law Incorporation [45]
3 years ago
8

What does a formation equation show

Chemistry
1 answer:
MAVERICK [17]3 years ago
7 0
A formation equation shows how 2 or more elements or compounds react and form another new compound. Some compounds are formed from combining metals and non-metals, from both non-metals, etc.
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Calculate the heat released when 25.0 grams of water freezes at 0 degree Celsius.
mafiozo [28]

Answer:

= 8350 joules

Solution and explanation:

  • The heat of fusion refers to the quantity of heat released when a given amount of water freezes.
  • For example, 1 g of water releases 334 J when it freezes at 0°C.

Therefore; For 25.0 g of water.

Heat released = Mass of water × heat of fusion

                        = 25 g × 334 J/g

                        = 8350 Joules

Hence, the amount of heat released when 25.0 g of water freezes at 0°C is 8350 J.

5 0
3 years ago
Convert 26.02 x 1023 molecules of C2H8 to grams. Round your answer to the hundredths place.
aliina [53]

Answer:

x= 138.24 g

Explanation:

We use the avogradro's number

6.023 x 10^23 molecules -> 1 mol C2H8

26.02 x 10^23 molecules -> x

x= (26.02 x 10^23 molecules  * 1 mol C2H8 )/6.023 x 10^23 molecules

x= 4.32 mol C2H8

1 mol C2H8     -> 32 g

4.32 mol C2H8 -> x

x= (4.32 mol C2H8 * 32 g)/ 1 mol C2H8

x= 138.24 g

4 0
4 years ago
The temperature of a 500 ml sample of gas increases from 150 k to 300 k. what is the final volume of the sample of gas, if the p
seropon [69]
Upon a constant pressure (P), volume (V) of a gas will vary in direct proportion to changes in temperature (T). So V1/T1 = V2/T2
V2 = V1T2/T1 = (500)(300)/150
V2 = 150000/150 = 1000 mL
5 0
3 years ago
3. What would be the effect of bringing a basketball that was inflated indoors outside on a freezing winter
erica [24]

Answer:

it would go back to being deflated

4 0
3 years ago
Ion version of potassium is ?
Debora [2.8K]

the ion version of potassium is k+

3 0
3 years ago
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