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3 years ago

7

____ Are subatomic particles found in the nucleus and carry positive electrical charge.

2 answers:

Angelina_Jolie [31]3 years ago

7 0

C. Protons
Protons are subatomic particles found in the nucleus and carry positive electrical charge.

Lorico [155]3 years ago

3 0

Answer:

C

Explanation:

there's no need to rush just calm down baby!!!

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What mass of copper is required to replace silver from 4.00g of silver nitrate dissolved in water?

larisa [96]

The balanced chemical reaction is written as:

<span>Cu +2AgNO3 → Cu(NO3)2 + 2Ag
</span>
We are given the amount of silver nitrate to be used for the reaction. This value will be the starting point of our calculations. It is as follows:

4.00 g AgNO3 ( 1 mol / 169.87 g ) ( 1 mol Cu / 2 mol AgNO3 ) ( 63.456 g / 1 mol ) = 0.747 g Cu

3 0

3 years ago

The decomposition of nitrogen dioxide is described by the following chemical equation:

kow [346]

Answer:

The balanced chemical equation will be " $NO_{2}+O\rightarrow NO+O_{2}$ ".

Explanation:

The given equation is:

$2NO_{2}\rightarrow 2NO+O_{2}$

<u>Step 1:</u>

<u></u> $2NO_{2}\rightarrow NO+O$ ...(equation 1)

<u>Step 2:</u>

<u></u> $NO_{2}+O\rightarrow NO+O_{2}$ ...(equation 2)

On adding "equation 1" and "equation 2", we get

⇒ $NO_{2}+NO_{2}+O\rightarrow NO+O+NO+O_{2}$

⇒ $2NO_{2}\rightarrow 2NO+O_{2}$

The second step:

⇒ $NO_{2}+O\rightarrow NO+O_{2}$

3 0

3 years ago

A solution of rubbing alcohol is 78.5 % (v/v isopropanol in water. how many milliliters of isopropanol are in a 90.8 ml sample o

poizon [28]

.785 x 90.8mL = 71.3 mL

4 0

3 years ago

Which of the following is the largest? cg, dg, mg, or ng

katrin [286]

The correct answer is: [C]: " mg " {"milligrams"} .
_____________________________________________________

4 0

3 years ago

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You place 12.0 milliliters of water in a graduated cylinder. Then you add 15.0 grams of metal to the water and the new water lev

Marrrta [24]

Answer:

<h3>The answer is 7.85 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

volume = final volume of water - initial volume of water

volume = 13.91 - 12 = 1.91 mL

We have

$density = \frac{15}{1.91} \\ = 7.853403141...$

We have the final answer as

<h3>7.85 g/mL</h3>

Hope this helps you

8 0

3 years ago

Read 2 more answers