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Elodia [21]
3 years ago
14

Which segment represents melting?" Temperature (°C) Time (minutes)

Chemistry
1 answer:
zheka24 [161]3 years ago
4 0
The segment that represents melting is time (minutes) and temperature.
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If the Kelvin temperature of a gas is doubled, the volume of the gas will increase by ____
liraira [26]

If the Kelvin temperature of a gas is doubled, the volume of the gas will increase by two. It follows Charles law where in for a mixed gas of mass, the volume is directly proportional to the temperature at constant pressure.

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Predict the following chemical formula for a compound between lithium and oxygen
zhuklara [117]
Li2O.. Because Li is +1 and O2 is -2
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What is the solution to the problem expressed to the correct number of significant figures?
anyanavicka [17]

Answer:

8700

Explanation:

First, do the operations i<em>nside parentheses</em>.

102 900/12 = 8600     2 sfs because of 12

170/1.27 = 130              2 sfs because of trailing 0 in 170

===============

Now, do the addition.

 8600

<u>  + </u><u>13</u><u>0 </u>

8700

The answer has two significant figures because when adding, you must round your answer to the same "place" as the measurement with its last significant figure furthest to the left.  

The last significant figure in 8600 (the 6, in the hundreds place) is further to the left than the last significant figure in 130 (the 3, in the tens place).

We round off to the nearest hundred and get the answer, 8700.

6 0
3 years ago
A sealed container holding 0.0255 L of an ideal gas at 0.979 atm and 67 ∘ C is placed into a refrigerator and cooled to 41 ∘ C w
Aliun [14]

Answer:

0.904 atm

Explanation:

Using Gay Lusaac's law where there is no change in Volume. The pressure changes directly proportional to absolute T°

P₁/T₁ = P₂/T₂

P₁T₂/T₁

P₂ = \frac{0.979 atm * 314k }{340k}

P₂ = 0.904 atm

5 0
3 years ago
If 65 grams of sodium carbonate powder is reacted with excess sulfuric acid, then how many mL of gas over water are collected at
shtirl [24]

Answer:

76

Explanation:

7 0
2 years ago
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