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3 years ago

- Describe the relationship between a chemical

Chemistry

1 answer:

mihalych1998 [28]3 years ago

3 0

Answer:

qwertyu

Explanation:

wertyui

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1. State how increasing the temperature of a gas changes its volume, assuming pressure is held

vredina [299]

Explanation:

the volume and temperature of a gas have a ditect relationship,as the temperature increases the volume also increases when pressure is held constand, heating the gas increases the kinetic energy of the particles or atoms,causing the gas to expand until the pressure returns to its original value

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3 years ago

What will happen when a star loses so much mass that its gravity becomes weaker? O A. The star will get hotter O B. The star wil

faust18 [17]

Answer: C

Explanation:

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3 years ago

The iron with which they make the houses or bridges is the same as our blood?

Leviafan [203]

Explanation:

yes, they are the same.

"Iron is a mineral that the body needs for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells that carries oxygen from the lungs to all parts of the body, and myoglobin, a protein that provides oxygen to muscles."

Fun fact:

At 4 grams per person, you'd need at least 2,352 completely drained donors to make a iron longsword out of blood.

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3 years ago

What is the gram of hydrogen in periodic table?<br>

earnstyle [38]

Answer:

This is your answer

Hope it helps!!!

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3 years ago

Using the activity series, write balanced chemical equations for the following reactions. If not reaction occurs, simply write N

MissTica

Answer:

a) $2 Ni (s) + Cu(NO_3)_2 (aq) \longrightarrow Cu(s) + 2 NiNO_3 (aq)$

b) NR

c) NR

d) $2 Cr (s) + 3 CoCl_2 (aq) \longrightarrow 3 Co(s) + 2CrCl_3 (aq)$

e) NR

Explanation:

a) Nickel is more reactive than copper so the first one will displace the other:

$2 Ni (s) + Cu(NO_3)_2 (aq) \longrightarrow Cu(s) + 2 NiNO_3 (aq)$

b) Due to the higher reactivity the magnesium has compared to the zinc, the first will remain in solution and the second will reamin solid. So, NR.

c) No reaction occurs, gold is resistant to acid in normal conditions due to its characteristic as noble metal.

d) Chromium is more reactive than cobalt so the last one will be displaced:

$2 Cr (s) + 3 CoCl_2 (aq) \longrightarrow 3 Co(s) + 2CrCl_3 (aq)$

e) Nothing happens, the reduction potencial of the hydrogen gas bubbled ins't enough to reduce the silver.

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3 years ago