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Anarel [89]
2 years ago
8

What tool do you use to measure a rectangle?

Chemistry
2 answers:
DerKrebs [107]2 years ago
7 0
Ruler, hope this helps babe :))
pashok25 [27]2 years ago
3 0

Answer:

Ruler

Explanation:

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skad [1K]

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plateaus

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It takes much less energy to change the temperature of oil than it does to change the temperature of water
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The identities of substances are the same before and after which type of change
Alenkinab [10]
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Calculate the amount of HCl in grams required to react with 3.75 g of CaCO3 according to the following reaction: CaCO3(s) + 2 HC
wolverine [178]

Answer:

The correct answer is 2.75 grams of HCl.

Explanation:

The given balanced equation is:  

CaCO₃ (s) + 2HCl (aq) ⇒ CaCl₂ (aq) + H₂O (l) + CO₂ (g)

Based on the given information, one mole of calcium carbonate is reacting with two moles of HCl. The molecular mass of HCl is 36.5 grams, thus, the mass of 2 moles of HCl will be, 36.5 × 2 = 73 grams

The molecular mass of CaCO₃ is 100 gram per mole, that is, the mass of 1 mole of CaCO₃ is 100 grams, therefore, the mass of HCl required for reacting with 3.75 grams of CaCO₃ will be,  

= 3.75 × 2 × 36.5 / 100 = 2.74 grams of HCl.  

8 0
3 years ago
What is the ionic charge for C, Si, Ge, Sn and Pb?
Alecsey [184]
An atom of carbon has 4 electrons in its outermost shell, which means that 
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</span>Si is in same group as carbon so its also 4+ or 4-
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6 0
2 years ago
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