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3 years ago

BRAINLIESTTT ASAP!!! PLEASE HELP ME :)

1 answer:

5 0

Pure substances is matter that cannot be separated into any other matter. Mixtures are a compound of different matter, and can be separated into different matter. Pure substances have a constant chemical properties, while mixtures have varying chemical properties.

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What is the product of a force and the time during which the force acts

ELEN [110]

Impulse is the product of a force and the time during which that force acts on a body.

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4 years ago

Methyl isocyanate, H3C-N=C=O, is used in the industrial synthesis of a type of pesticide and herbicide known as a carbamate. As

statuscvo [17]

Answer:

(a) The lewis structure for methylisocyanate is in the attached.

(b) The carbonyl carbon have an sp² hybridization

Explanation:

(a) The lewis structure for methylisocyanate has the nitrogen with one lone pair and the oxygen with two lone pairs.

(b) The carbonyl carbon form double bond with the oxygen causing to form three hybrid orbitals sp².

The Nitrogen also forms a double bond with the carbon having an sp² hybridization too.

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3 years ago

The graph below shows the decay of a radioactive isotope. What is the half-life of the isotope?

Stells [14]

I think the answer is b

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3 years ago

If there are 50 grams of U-238 on day zero of radioactive decay, how much will there be after 4.5 billion years? A) 0.0 grams B)

Natalija [7]

Answer:

= 25 g

Explanation:

Using the formula;

A = A₀ (1/2)^(t/h)

where A is the final amount,

A₀ is the initial amount of the substance,

t is the time and

h is the half-life of the substance,

In this case; the half life of U-238 h is equal to 4.47 billion years.

A = A₀ (1/2)^(t/h)

A = 50 (1/2)^(4.5 / 4.47)

= 24.88

<u> = 25 g</u>

7 0

3 years ago

Read 2 more answers

What are some example of nuclear acids

vladimir1956 [14]

First of all, it is a nucleic acid, not nuclear acid.

Examples are DNA and RNA( Deoxyribonucleic Acid and Ribonucleic Acid)

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3 years ago