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melisa1 [442]
3 years ago
11

Help me please fast​

Chemistry
1 answer:
Rufina [12.5K]3 years ago
3 0

Answer:

He

Be

Ar are the noble gases

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If 48 g of magnesium reacts with oxygen gas, how many grams of magnesium oxide will be formed according to the following equatio
Aloiza [94]

think it maybe 48 mg0 because there should be 2g magnesium in the word equation

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Which of the following is the correctly balanced chemical equation for the reaction of Ca(OH)2 and HNO3?
sattari [20]

Explanation:

The reaction between calcium hydroxide and nitric acid is as follows.

  Ca(OH)_{2} + HNO_{3} \rightarrow Ca(NO_{3})_{2} + H_{2}O

Number of reactant atoms are as follows.

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  • O = 4
  • H = 3
  • N = 1

Number of product atoms are as follows.

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  • H = 2
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To balance the given chemical equation, multiply HNO_{3} by 2 on reactant side and multiply H_{2}O by 2 on the product side.

Therefore, the balanced chemical equation will be as follows.

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4 0
3 years ago
**98 POINTS**
Andrei [34K]

OP already did it - CONGRATS!!

here are the steps 2 get the same ans:

(NH4)2 CO3 has 2x N, 8x H, 1x C and 3x O per molecule

so its molecular mass = 2x14 + 8x1 + 1x12 + 3x16

=28+8+12+48

=96g

of that 96g, 8x1=8g is due to Hydrogen

so by ratio n proportion, 1.00g will have 1x8/96 = 1/12g = 0.083g of H

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3 years ago
Which orbitals can overlap to form a pi bond?
Yanka [14]

The correct option is A)

They overlap to form a pi bond


And yes, if a question of yours gets deleted, the amount of points you used are automatically transferred back to your account

Hope this helps

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