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professor190 [17]
2 years ago
13

Please answer this thanks and have a great day! Xoxo!

Chemistry
2 answers:
IgorC [24]2 years ago
7 0

Answer:

a is ur answer have fun

Explanation:

good luck bro

Ipatiy [6.2K]2 years ago
4 0
I’m gonna say C byee have a good day
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How old is a bone if it now .3125 of C-14 when it originally had 80.0g of C-14
Taya2010 [7]
<h3>Answer:</h3>

42960 years

<h3>Explanation:</h3>

<u>We are given;</u>

  • Remaining mass of C-14 in a bone is 0.3125 g
  • Original mass of C-14 on the bone is 80.0 g
  • Half life of C-14 is 5370 years

We are required to determine the age of the bone;

  • Using the formula;
  • Remaining mass = Original mass × 0.5^n , where n is the number of half lives.

Therefore;

0.3125 g = 80.0 g × 0.5^n

3.90625 × 10^-3 = 0.5^n

  • Introducing logarithm on both sides;

log 3.90625 × 10^-3 = n log 0.5

Solving for n

n = log 3.90625 × 10^-3 ÷ log 0.5

   = 8

  • Therefore, the number of half lives is 8
  • But, 1 half life is 5370 years
  • Therefore;

Age of the rock = 5370 years × 8

                          = 42960 years

Thus, the bone is 42960 years old

7 0
3 years ago
1. The immediate surroundings of an individual
aalyn [17]

Answer:

1,b

2,c

3,d

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5a

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Explanation:

1,environment

2,community

3,ecosystem

4,organism

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3 years ago
Answer this please thanks
Ghella [55]

Answer:

The third one

Explanation:

7 0
3 years ago
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Answer:

NaCl is the correct answer

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chemical equilibrium, condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. A reversible chemical reaction is one in which the products, as soon as they formed, react to produce the original reactants.

Explanation:

chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.

6 0
2 years ago
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