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3 years ago

I just need help with 2 chemistry questions! Can you please help me? I will give brainliest answer!

Chemistry

2 answers:

Wewaii [24]3 years ago

7 0

Question 1

B. The two metal samples will change temperature at about the same rate.

D. The gold would sink to the bottom if placed in the mercury.

Question 2

C. 2

telo118 [61]3 years ago

6 0

1
C. The gold would float if placed in the mercury.
A. The mercury will change temperature at a much faster rate under the same heating conditions.

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Science and technology are different, yet related, fields of study. Which action is best classified as science?

Nitella [24]

Answer:

Option D

Explanation:

analyzing cells is something I'm doing in science class right now!

Hope this helped, have a nice day! :)

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3 years ago

How many seconds are in the month of may? (May has 31 days)

creativ13 [48]

Answer:

92,565,504,000 seconds in 31 days

Explanation:

multiply the days by 24 hours

31 * 24= 744

multiply the hours in 1440 minutes

1071360 minutes

now multiply that by 86400 seconds

92,565,504,000 seconds in 31 days

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2 years ago

Read 2 more answers

What would the name of a compound composed of nickel, sulfur, and oxygen be? A. Nickel sulfur oxide B. Nickel sulfate C. Nickel

dexar [7]

Answer:

The answer to your question is: B. Nickel Sulfate

Explanation:

A. Nickel sulfur oxide this compound do not exist, this option is incorrect.

B. Nickel sulfate This compund exist and the formula is NiSO₄

C. Nickel oxygen sulfide This compound do not exist, the order of the names is inocrrect.

D. None of these This option is incorrect because because letter B is correct.

3 0

3 years ago

Read 2 more answers

From the enthalpies of reaction H2(g)+F2(g)→2HF(g)ΔH=−537kJ C(s)+2F2(g)→CF4(g)ΔH=−680kJ 2C(s)+2H2(g)→C2H4(g)ΔH=+52.3kJ calculate

DIA [1.3K]

Answer:

$\Delta H$ for the given reaction is -2486.3 kJ

Explanation:

The given equation can be written as a combination of the following equation:

$2H_{2}(g)+2F_{2}(g)\rightarrow 4HF(g)$ ; $\Delta H_{1}= (2\times -537kJ)=-1074 kJ$

$2C(s)+4F_{2}(g)\rightarrow 2CF_{4}(g)$ ; $\Delta H_{2}=(2\times -680kJ)=-1360kJ$

$C_{2}H_{4}(g)\rightarrow 2C(s)+2H_{2}(g)$ ; $\Delta H_{3}=-52.3kJ$

-----------------------------------------------------------------------------------

$C_{2}H_{4}(g)+6F_{2}(g)\rightarrow 2CF_{4}(g)+4HF(g)$

$\Delta H=\Delta H_{1}+\Delta H_{2}+\Delta H_{3}=(-1074-1360-52.3)kJ=-2486.3kJ$

6 0

3 years ago

The temperature of 500 mL of water is 16°C. What happens to the water

lana66690 [7]

Answer:

The answer would be B, The temperature of the water increases because the average kinetic energy of the water molecules increases.

Explanation:

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2 years ago