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3 years ago

QUESTION 4

Chemistry

1 answer:

Greeley [361]3 years ago

7 0

Answer:

B) 2

Explanation:

There are two significant figures in given measurement,

2, 0

Significant figures:

1= The given measurement have four significant figures 1534.

2= All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

3= Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.

4= Zero between the non zero digits are consider significant like 107 consist of three significant figures.

5= The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.

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3 years ago

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What method of heat transfer takes place when particles of matter move from one place to another in a liquid

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Answer:

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Explanation:

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2 years ago

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Answer:

$\large \boxed{\sf metal \ and \ non \ metal}$

Explanation:

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2 years ago

Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed leave it blank. If no reaction occurs leav

babunello [35]

Answer:

H+ + OH− --> H2O

Explanation:

Hydrochloric acid is represented by the chemical formular; HCl. This is an ionic substance so in water it breaks apart into hydrohrn ions; H+ and chloride ions; Cl−. It is a strong acid, hence it completely dissociates.

Potassium Hydroxide is also an ionic substance it also breaks apart in water into potassium ions; K+ and hydroxide ions; OH−. It is a strong base, hence it completely dissociates.

The complete ionic equation for the reaction is given as;

H+ + Cl− + K+ + OH− --> K+ + Cl− + H2O

The Hydrogen ion and the Hydroxide ions combine to form water.

The net ionic equation is given as;

H+ + OH− --> H2O

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2 years ago