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4 years ago

There are three subatomic particles. the particle that is charged positively in the nucleus is called the

Chemistry

1 answer:

Sholpan [36]4 years ago

5 0

It is called a proton I hope this helps

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Aluminum has density of 2.7g/cm3.<br><br> What is the mass of 35 cm3 aluminum in g?

Sveta_85 [38]

Answer:

density= 2.7 g/cm3

volume= 25 cm3

mass = density× volume

= 35×2.7

= 94.5 g

7 0

3 years ago

A 3.5 M KNO3 solution contains 3.5 miles of KNO3 dissolved in A) 1.0 liter of solution B) 1.0 liter of solvent C) 3.5 liters of

Vladimir [108]

N=3.5 mol
c=3.5 mol/L

n=cv

v=n/c

v=3.5/3.5=1.0 L

A) 1.0 liter of solution

4 0

3 years ago

Sodium hydrogen carbonate NaHCO3, also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Ac

olga2289 [7]

Answer:

1.4952 grams of sodium bicarbonate she would need to ingest to neutralize this much HCl.

Explanation:

$Moles (n)=Molarity(M)\times Volume (L)$

Moles of hydrochloric acid = n

Volume of hydrochloric acid solution = 200.0 mL = 0.200 L

Molarity of the hydrochloric acid = 0.089 M

$n=0.089 M\times 0.200 L=0.0178 mol$ of HCL

$HCl(aq)+NaHCO_3(aq)\rightarrow NaCl(aq)+H_2O(l)+CO_2(g)$

According to reaction, 1 mole of HCl is neutralized by 1 mole of sodium bicarbonate.

Then 0.0178 moles of HCl wil be neutralized by :

$\frac{1}{1}\times 0.0178 mol=0.0178 mol$ of sodium bicarbonate

Mass of 0.0178 moles of sodium bicarbonate:

0.0178 mol × 72 g/mol = 1.4952 g

1.4952 grams of sodium bicarbonate she would need to ingest to neutralize this much HCl.

8 0

3 years ago

Calculate the number of nitrogen atoms in 240 g of ammonium nitrate?

gtnhenbr [62]

3.125 i believe is the answer

6 0

3 years ago

Read 2 more answers

A star produces energy by:

frosja888 [35]

Answer : C

Explanation:

a star produces energy by combining two atoms into one creates a powerful burst of energy

3 0

3 years ago