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notka56 [123]
3 years ago
15

Which of the following is evidence of a physical change?haora

Chemistry
2 answers:
Tatiana [17]3 years ago
5 0

Answer:

a Change in size

Explanation:

Arisa [49]3 years ago
3 0
Chopping wood
ripping pants
breaking something in half
molding clay
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What is the molarity when 0.181 moles of MgNO3)2 are dissolved in enough water to make 0.750 L solution?
eimsori [14]

Answer:

Molarity = 0.24 M

Explanation:

Given data:

Number of moles of Mg(NO₃)₂ = 0.181 mol

Volume of solution = 0.750 L

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

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Molarity = number of moles of solute / L of solution

by putting values,

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3 years ago
A scientist formulates the following hypothesis: If plants of the same species
Blababa [14]

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Growth rate

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According to the hypothesis provided for this investigation, the scientist wants to determine if the amount of fertilizer plants of the same species receive will affect their growth rate when planted in the same condition. This shows that the independent variable is the amount of fertilizer to be used while the RESPONDING VARIABLE OR DEPENDENT VARIABLE is the GROWTH RATE OF THE PLANTS because it responds to the amount of fertilizer.

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