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alexandr402 [8]
3 years ago
12

Please help !!! 45 minutes remaining on my test

Chemistry
2 answers:
Ksivusya [100]3 years ago
7 0
First, third, last one I had the same test
elixir [45]3 years ago
3 0
One, three, and five
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Which answer is INCORRECT not the correct one ​
Elena L [17]

Explanation:

It's 4

Hope it's help....

<h3>^_^</h3>
6 0
3 years ago
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Consider the following intermediate chemical equations.
mixas84 [53]

Answer:

CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l).

Explanation:

  • We have two equations:

CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)

2H₂O(g) → 2H₂O(l)

  • To add the two equations: we omit H₂O(g)  that is formed by 2 moles in the product side of the first equation and consumed by 2 moles from the reactants side in the second equation

  • So, the overall chemical equation is obtained by combining these intermediate equations is:

<em>CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l).</em>

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8 0
3 years ago
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Calculate the number of moles of Li3PO4 in 2.2 L of a 0.60 M Li3PO4 solution.
Bingel [31]

Answer:

1.32 mole

Explanation:

The following data were obtained from the question:

Volume of solution = 2.2L

Molarity of solution = 0.60M

Mole of Li3PO4 =..?

Molarity is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is represented as:

Molarity = mole /Volume

With the above formula we can easily calculate the number of mole of Li3PO4 as shown below:

Molarity =mole /Volume

0.6 = mole of Li3PO4 /2.2

Cross multiply

Mole of Li3PO4 = 0.6 x 2.2

Mole of Li3PO4 = 1.32 mole

Therefore, 1.32 mole of Li3PO4 is contained in the solution.

4 0
3 years ago
The probability that it will rain tomorrow is 11/15. What is the probability that it will not rain ?
WINSTONCH [101]

Answer:

4/15

Explanation:

15/15 - 11/15 = 4/15

If 11/15 is the probability that it'll rain tomorrow, then the rest should be the probability that it'll not rain tomorrow.

6 0
3 years ago
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Compare the two elements H and Na
Oxana [17]

Explanation:

H is hydrogen and Na is sodium.

Hydrogen is the first element of the periodic table. Its atomic no is 1. Its atomic weight is 1.008. Its electronic configuration is 1s¹.

Na is hydrogen. It lies at 3rd period and 1st group. Its atomic number is 11. Its atomic weight is 22.989769 u. Its electronic configuration is 2,8,1.

6 0
3 years ago
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