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Alex
3 years ago
14

Which of the following statements correctly describes what happens in all chemical reactions?

Chemistry
1 answer:
azamat3 years ago
4 0

Answer:

Bonds between atoms are broken/ or new bonds are formed

Explanation:

Due to chemical changes.

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Write a detailed paragraph about how a volcano is formed. be sure to
victus00 [196]

Answer:

okay but give me brainliest

Explanation:

A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth's surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Volcanic flows are called lahars.

7 0
3 years ago
If an object is travelling 25.0 meters/second, how far will it travel in 45 minutes?
Misha Larkins [42]
  • Speed=25m/s
  • Time=45min=(45×60)s=2700s

\\ \rm\longmapsto Distance=Speed(Time)

\\ \rm\longmapsto Distance=25(2700)

\\ \rm\longmapsto Distance=67500m

4 0
3 years ago
Which mass of magnesium sulphate will be formed if 12 g of magnesium are reacted with sulphuric acid?
Alinara [238K]

Answer:

magnesium hydrosulphate

4 0
3 years ago
22.5 g of silver nitrate reacts with excess magnesium bromide, determine the mass
Setler [38]

Answer:

9.82 g of Mg(NO₃)₂

Explanation:

Let's determine the reaction:

2AgNO₃  +  MgBr₂  → Mg(NO₃)₂  +  2AgBr

2 moles of nitrate silver reacts with MgBr₂ in order to produce 1 mol of magnesium nitrate and silver bromide.

We determine the moles of AgNO₃

22.5 g . 1mol / 169.87g = 0.132 moles

Ratio is 2:1.

2 moles of silver nitrate can produce 1 mol of magnesium nitrate

Then, our 0.132 moles may produce (0.132 . 1)/ 2 = 0.0662 moles

We convert moles to mass:

0.0662 mol . 148.3 g/ mol = 9.82 g

6 0
3 years ago
Particles are arranged in a crystal structure in a sample of
Sergeu [11.5K]
The answer is (4) Ag(s)

Solid Silver has a Face Centered Cubic crystal structure.

The remaining choices are gases (H2 & Ar) and liquid (Br). Liquids and gases do not form crystal structures as their atoms are loose.
3 0
3 years ago
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