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4 years ago

All isotopes of uranium have how many protons

Chemistry

2 answers:

Firdavs [7]4 years ago

7 0

Depends on how many electrons you have

dlinn [17]4 years ago

5 0

The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99%)

Hope This Helped

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Be sure to answer all parts. Acetone is one of the most important solvents in organic chemistry. It is used to dissolve everythi

Kazeer [188]

Answer:

Half life = 79.67 sec

Explanation:

Given that:

k = $8.7\times 10^{-3}\ s^{-1}$

The expression for half life is shown below as:-

$t_{1/2}=\frac{\ln2}{k}$

Where, k is rate constant

So,

$t_{1/2}=\frac{\ln2}{8.7\times 10^{-3}\ s^{-1}}$

$t_{1/2}=114.94252\ln \left(2\right)\ sec=79.67\ sec$

Half life = 79.67 sec

6 0

3 years ago

What is the common name of the following compound

Masja [62]

Hey there!

Here is your answer:

The proper answer to this question is option D "sec-butyl bromide".

Reason:

Sec-butyl bromide looks often like this:

Therefore the answer is option D!

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit

4 0

3 years ago

Read 2 more answers

Using data from seismic waves, geologists have learned that Earth’s interior is made up of several

Wewaii [24]

Answer:

Explanation:

3 0

3 years ago

A scientist is comparing 2 samples of the same compound. One is pure and the other is impure. The compound is a solid at room te

wariber [46]

Answer:

A glass of mineral water is not pure water.

Explanation:

Pure chemical substances

Pouring water into a glass from a bottle

Food and drink may be advertised as ‘pure’. For example, you may see cartons of ‘pure orange juice’ or ‘pure mineral water’. This means that nothing else was added to the orange juice or mineral water during manufacture. However, these substances are not pure to a scientist. In science, a pure substance contains only one element or compound.

Mineral water is mostly water, but there are other substances mixed with it. These are the ingredients that you see listed on the bottle’s label.

8 0

3 years ago

How many significant figures are in 675000 m 6 4 3 5

Dima020 [189]

Answer:

There are 3 significant figures in 675000

Explanation:

The rules for significant figures:

- Non zero digit (from 1 upward) are always significant

- Trailing zero are not significant

- but zero in the presence of decimal are significant

In this case, the trailing zeros are not significant thus only the first 3 non zero digit are significant.

4 0

3 years ago