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2 years ago

Chemical reactions

1 answer:

5 0

D) produce new substances

Since chemical reactions don't only take place in living orgasim only. Also atoms can't be made or destroyed. And it occurs inside and outside living orgasim
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An Expert, please answer this question!

Rudiy27

Answer:

C) The student and desk have to be in contact to apply the force.

Explanation:

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2 years ago

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1. If I have 3 identical books that all have a length of 25cm, a

Ksenya-84 [330]

Answer:

12,375 cm³

Explanation:

v=l×w×h

Since there are 3 books the equation would then be

v=3(l×w×h)

v=3(25×15×11)

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3 years ago

HELPP! pls

pshichka [43]

Answer:

"2.48 mole" of H₂ are formed. A further explanation is provided below.

Explanation:

The given values are:

Mole of Al,

= 3.22 mole

Mole of HBr,

= 4.96 mole

Now,

(a)

The number of mole of H₂ are:

⇒ $\frac{Mole \ of \ H_2}{3} =\frac{Mole \ of HBr}{6}$

or,

⇒ $Mole \ of \ H_2=\frac{1}{2}\times Mole \ of \ HBr$

⇒ $=\frac{1}{2}\times 4.96$

⇒ $=2.48 \ mole$

(b)

The limiting reactant is:

= $HBr$

(c)

The excess reactant is:

= $Al$

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2 years ago

What is the mass of 4,48 L of SO2 at STP?

Trava [24]

Answer:

2 moles

Explanation:

Hi there !!

Given volume = 44.8 litres

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No: of moles = Given volume / Molar volume

= 44.8 / 22.4 = 2 moles

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raketka [301]

Zn(HCO3)2 is the compound for Zinc Bicarbonate

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3 years ago

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