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Doss [256]
2 years ago
9

Many diseases can be prevented with a proper diet, exercise, and abstinence from smoking, alcohol, drugs, and sexual activity. T

rue or false
Chemistry
1 answer:
tiny-mole [99]2 years ago
4 0

Answer:

True

Explanation:

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You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics. Y
lbvjy [14]

Answer: 2.58 days

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = ?

t = age of sample  = 6 days

a = initial amount of the reactant  =  1 g

a - x = amount left after decay process   = 0.2 g

a) to find the rate constant

6=\frac{2.303}{k}\log\frac{1.0}{0.2}

k=\frac{2.303}{6}\log\frac{1.0}{0.2}

k=0.268days^{-1}

b) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

t_{\frac{1}{2}}=\frac{0.693}{0.268}=2.58days

The half life is 2.58 days

3 0
3 years ago
Convert eachh into scientific notation
mixer [17]

Answer:

0.00580 →

3000 →

0.000908 →

200. →

Explanation:

yay

7 0
3 years ago
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When combing one's hair, the comb becomes positively charged. What happens to the hair being combed?
TEA [102]

Since the comb is positively charged, the hair will stick to the comb.

I think

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Which of the following would be found in both eukaryotic AND prokaryotic cells?
beks73 [17]
Nucleus ,endoplasmic reticulum
7 0
2 years ago
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Tìm câu sai về độ pH?
galina1969 [7]

Answer:

B

Mark as the Brainliest please

5 0
2 years ago
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