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ddd [48]
3 years ago
11

1. Why do scientists use a standard measurement system?

Chemistry
2 answers:
Margaret [11]3 years ago
3 0

Answer:

Explanation:

1.Scientists use a shared system for reporting measurements called the International System of Units (SI). We use common measurement systems because science involves a lot of replication to confirm results. The most common system used in science is the metric system.

2.m, kg, m^3

3. g value change

Phoenix [80]3 years ago
3 0

Answer:

3 is value change

Explanation:

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A liter of water has a mass of 1000 g. What is the density of water?
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3 years ago
Write the chemical equation for the reaction of lithium hydroxide (LiOH) with an Arrhenius acid of your choosing. Name and write
Inessa05 [86]
<h3>Answer:</h3>

LiOH(aq) +HCl(aq)→ LiCl(aq) + H₂O(l)

Salt formed is LiCl

<h3>Explanation:</h3>
  • Arrhenius acid refers to a substance that ionizes in water to generate protons or hydrogen ions.
  • Examples of Arrhenius acid include acids such as HCl, H₂SO₄ and HNO₃.
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That is;

LiOH(aq) +HCl(aq)→ LiCl(aq) + H₂O(l)

  • The salt formed is LiCl
  • The reaction is an example of neutralization reaction.
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What happens to metal when rapidly heated then cooled
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It is called tempering. Its tensile strength may reduce but it will become more rigid and hard to break compared to the original metal.

Explanation:

( Source : Quora )

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