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Gnesinka [82]
2 years ago
7

When she placed her hand on the side of the container, it felt really cold, but it didn't feel that way before. The temperature

had dropped by about 30 degrees Celsius. The substance was now grey and crystallin in structure.
Was this a chemical reaction?
Answer the question (in a complete sentence) Provide evidence to support your claim and describe (reasoning/justify) how the evidence supports the claim.
Chemistry
2 answers:
artcher [175]2 years ago
3 0

Answer:

this is a physical reaction

Explanation:

wel2 years ago
3 0

Answer:

this is a physical reaction

Explanation:

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Is the following equation balanced? SO3 + 2H2O H2SO4 no yes
postnew [5]

Answer: No

Explanation: It's not balanced because four oxygen atoms in H2SO4,  whereas there are 5 oxygen atoms in the reactants side. Also, there's more hydrogen atoms on the reactants side.

I hope this helps!

7 0
3 years ago
A football field is 120 yards by 53.333 yards. What is the area of the football field in acres if 1 acre=43560 ft?? Use correct
maw [93]

Answer:

1.3223 acres

Explanation:

a football field's area is 360 feet (120 yards) x 160 feet (53.333 yards) = 57,600 sq. feet

if the area of an acre is 43,560 sq. feet, then a football field in acres = 57,600 sq. feet / 43,560 sq. feet = 1.3223 acres

we can verify our answer by doing the same calculation in sq. yards:

football field = 120 yards x 53.33 yards = 6,400 sq. yards

an acre is 4,840 sq. yards

football field in acres = 6,400 sq. yards / 4,840 sq. yards = 1.3223 acres

8 0
3 years ago
Read 2 more answers
These are all chemistry questions please help
SpyIntel [72]

Answer:

cant read the questions...

Explanation:

4 0
3 years ago
Which is the best reason that a geologist might carry a small dropper bottle filled with hydrochloric acid when doing fieldwork?
natta225 [31]

Answer:

C is the correct answer

Explanation:

to test for the presence of carbonate minerals in a rock

7 0
3 years ago
It has been established that 8.0x10^4 tons of gold (Au) have been mined. Assume gold cost $350 per ounce. Whats the total worth
bazaltina [42]
So first lets find out how much gold there is. 10^4=10,000so that means 8.0x10,000= 8,000. now we have to find out how much money that is. All we have to do is multiply 8,000 by 350. When multiplied you get $2,800,000
7 0
2 years ago
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