All categories

3 years ago

The nucleus of an atom has _____.

Chemistry

2 answers:

e-lub [12.9K]3 years ago

6 0

A central core that is compact and contains protons and neutrons

yan [13]3 years ago

5 0

The answer would be the third choice; A central core that is compact and contains protons and neutrons.

Hope this helps :)

You might be interested in

Match each label below with the appropriate term. Note: there may be more than one correct answer

konstantin123 [22]

Answer:

sigma bond and represent two electrons

7 0

3 years ago

Read 2 more answers

There are several different insecticides sold at your local home and garden store. They all claim to be safe for use around anim

Dovator [93]

Look up results of tests conducted by environmental agencies is the most logical answer in my opinion.

5 0

3 years ago

Read 2 more answers

CAN YOU HELP ME WITH THIS?????????????????????????????????????? ????????????????????????????????????????????????????????????????

maria [59]

PV=nRT

P = 85.0 x 10^3 Pa

T = 273 + 20 = 293 K

n = 2.0 moles

R = 8.314 m3. pa / mol .K

V = 2.0 x 293 x 8.314 / 85.0x10^3 = 0.195623529 m^3

6 0

3 years ago

How many milliliters of concentrated hydrochloric acid solution (36.0% HCl by mass, density = 1.18 g/mL) are required to produce

poizon [28]

W=0.360
p=1.18g/mL
pH=2.12
v=14.0 L
M(HCl)=36.46 g/mol
v₀-?

1) pH=-lg[H⁺]

[H⁺]=c(HCl)=10^(-pH)

n(HCl)=v[H⁺]=v*10^(-pH)

2) n(HCl)=m(HCl)/M(HCl)=wv₀p/M(HCl)

3) v*10^(-pH)=wv₀p/M(HCl)

v₀=v*10^(-pH)M(HCl)/(wp)

v₀=14.0*10^(2.12)*36.46/(0.360*1.18)=9.115 mL

Approximately 9.1 mL of concentrated solution required.

3 0

4 years ago

Write a balanced chemical equation for this reaction. What is the coefficient for hydrochloric acid in the reaction

Leviafan [203]

The question is incomplete, here is the complete question:

Write a balanced equation for the neutralization of calcium hydroxide by hydrochloric acid. What is the coefficient for hydrochloric acid in the reaction.

Answer: The balanced chemical reaction is written below and the coefficient of hydrochloric acid is 2.

Explanation:

Neutralization reaction is defined as the reaction in which an acid reacts with a base to produce a salt and water molecule.

Balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side will be equal to the total number of individual atoms on the product side. These equations follow law of conservation of mass.

The balanced chemical equation for the reaction of calcium hydroxide and hydrochloric acid follows:

$Ca(OH)_2+2HCl\rightarrow CaCl_2+2H_2O$

By Stoichiometry of the reaction:

1 mole of calcium hydroxide reacts with 2 moles of hydrochloric acid to produce 1 mole of calcium chloride and 2 moles of water molecule.

Hence, the balanced chemical reaction is written below and the coefficient of hydrochloric acid is 2.

8 0

4 years ago