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notsponge [240]
3 years ago
11

What are there significant changes in the body at puberty stage

Chemistry
2 answers:
Inessa [10]3 years ago
3 0
Composition and height
Aloiza [94]3 years ago
3 0
This can range from numerous of stages but some important ones are

For men
Growing facial and body hair
Voice deepening 
Height and composition growth
Gentles changing
etc

Women
Breast growth
Height and composition
First Period
etc

And both experience acne etc
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In the reaction N2 + 3H2 → 2NH3, what is the mole ratio of hydrogen to nitrogen?
uranmaximum [27]

Answer: The mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

Explanation:

•Mole ratios are determined using the coefficients of the substances in the balanced chemical equation. •Each coefficient represents the number of mole of each substance in the chemical reaction.

•The mole ratio can be determined by first writing out a balanced chemical equation for the reaction.

For this reaction the balanced chemical equation is

N2(g) + 3H2(g) ----> 2NH3(g)

1mol:3mol : 2mol

From the equation we can see that 1 mole of N2(g) reacts with 3 moles of H2(g) or 3 moles of H2(g) react with 1 mole of N2(g) to produce 2 moles of NH3(g).

Therefore, the mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

7 0
3 years ago
_Pb(OH)2+_HCl -> _H2O+_PbCl2
Eduardwww [97]

Answer:

20 + CIPb

Explanation:

Use the commutateive proptery to reoder the terms

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Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 9.00 moles of aluminum sulfate, al2(so4)3. express the nu
klasskru [66]
<span>Ans : The chemical formula for aluminum sulfate is Alâ‚‚(SOâ‚„)â‚ 6.00 mol Alâ‚‚(SOâ‚„)â‚ Al: 6.00 mol Alâ‚‚(SOâ‚„)â‚ x (2 mol Al / 1 mol Alâ‚‚(SOâ‚„)â‚ ) = 12.00 mol Al S: 6.00 mol Alâ‚‚(SOâ‚„)â‚ x (3 mol S / 1 mol Alâ‚‚(SOâ‚„)â‚ ) = 18.00 mol S O: 6.00 mol Alâ‚‚(SOâ‚„)â‚ x (12 mol O / 1 mol Alâ‚‚(SOâ‚„)â‚ ) = 72.00 mol O</span>
5 0
3 years ago
At a temperature of 393 K, the pressure of a sample of nitrogen is 1.07 atm. What will the pressure be at a temperature of 478 K
Rainbow [258]

Answer:

1.30atm

Explanation:

P1/T1 = P2/T2

1.07/393 = P2/478

6 0
4 years ago
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