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3 years ago

14

Fill in the Blank Question

2 answers:

timofeeve [1]3 years ago

8 0

The number of protons is unique to each element, and is what gives the element its atomic number.

When the element has an equal number of protons and electrons, then the element is electrically neutral (since the positive and negative charges cancel each other out).

So the answer for this question would be protons, and then electrons.

creativ13 [48]3 years ago

7 0

Answer:

Protons

Explanation:

It's the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Hope this helped, can I also get brainliest plz?

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3 years ago

Two balls are at the same time height and released at the same time. One ball is dropped and hits the ground 5 s later. The othe

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3 years ago

Predict the charge on the monatomic ions formed from the following atoms in binary ionic compounds in the following order: Magne

Drupady [299]

The charge on the monatomic ions of Magnesium, Aluminum, Strontium, and Nitrogen are +2, +3, +2, and -3.

<h3>What is the charge on the ions of atoms of Magnesium, Aluminum, Strontium, Nitrogen?</h3>

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8 0

2 years ago

You need a 30% alcohol solution. On hand, you have a 200 mL of a 10% alcohol mixture. You also have 55% alcohol mixture. How muc

Art [367]

Answer: 160 ml

Explanation:

The expression used will be :

$C_1V_1+C_2V_2=C_3V_3$

where,

$C_1$ = concentration of Ist alcohol solution= 10%

$C_2$ = concentration of 2nd alcohol solution= 55%

$V_1$ = volume of Ist alcohol solution = 200 ml

$V_2$ = volume of 2nd alcohol solution= v ml

$C_3$ = concentration of resulting alcohol solution= 30%

$V_2$ = volume of resulting alcohol solution= (v+200) ml

Now put all the given values in the above law, we get the volume of added.

$(10\times 200)+(55\times v)=(30\times (v+200)ml)$

By solving the terms, we get :

$v=160ml$

Therefore, the volume of 55% mixture needed to be added to obtain the desired solution is 160 ml.

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3 years ago

Define: 1. acids, 2. strong acids, 3. weak acids.

Reika [66]

H^+ = acid
OH^- = alkaline

Acids have a pH of below 7. The lower the number, the strongest the acid.

4 0

4 years ago

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