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Georgia [21]
3 years ago
11

Phase changes are chemical changes. True False ...?

Chemistry
2 answers:
tekilochka [14]3 years ago
8 0
False
Phase changes are physical changes and can be easily reverted by adjusting pressure or temperature. 
marusya05 [52]3 years ago
5 0
Hi , the answer is false.
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Need help plssss!!!!!
Mashutka [201]

Answer:

a

Explanation:

becsaus

6 0
3 years ago
Consider the following reaction: C6H6 + O2 \longrightarrow ⟶ CO2 + H2O 39.7 grams of C6H6 are allowed to react with 105.7 g of O
Ivenika [448]

Answer:

116.3 grCO2

Explanation:

1st - we balance the equation so that it finds the same amount of elements of the product side and of the reagent side

C6H6 +15/2 O2⟶ 6CO2 +3 H2O

2nd - we calculate the limiting reagent

39.2gr C6H6*(240grO2/78grC6H6)=120 grO2

we don't have that amount of oxygen so this is the excess reagent and oxygen the limiting reagent

3rd - we use the limiting reagent to calculate the amount of CO2 in grams

105.7grO2*(264grCO2/240grO2)=116.3 grCO2

7 0
3 years ago
What units are used in the periodic table for atomic mass?
AleksAgata [21]
D. amu
amu stands for atomic mass unit
5 0
4 years ago
Read 2 more answers
After the 1940s, the invention of _______ permitted wines to be produced in places where the climate was not ideal for wine prod
satela [25.4K]
<span>after the 1940, the infention of : PASTEURIZATION permitted wines to be produced in places where climate was not ideal for wine production after pasteurization process, all the microbes that exist within the wine are eliminated, which will prevent it from rottening. This make it possible to store wine for a long period of time even thought it's not in the harvesting climate</span>
5 0
3 years ago
Help with this please
Len [333]

Answer:

12

Explanation:

There are 4 sulfur atoms in SO4

4×3=12

This means that it turns into 3×(SO4)

=3SO4

6 0
3 years ago
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