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balu736 [363]
3 years ago
7

The number of protons + number of neutrons is equal to the

Chemistry
1 answer:
max2010maxim [7]3 years ago
5 0

Answer: mass

Explanation: the protons and neutrons make up the nucleus and nearly the entire mass of the atom

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What if the volume of the cylinder?
Rzqust [24]

Answer:

653.45

Explanation:

pi * 4 by the power of 2 * 13 ~653.45

4 0
3 years ago
Please help...awarding brainliest if correct and lots of points.
abruzzese [7]

Silver chloride produced : = 46.149 g

Limiting reagent : CuCl2

Excess remains := 3.74 g

<h3>Further explanation</h3>

Reaction

silver nitrate + copper(II) chloride ⇒ silver chloride + copper(II) nitrate

Required

silver chloride produced

limiting reagent

excess remains

Solution

Balanced equation

2AgNO3 (aq) + CuCl2 (s) → 2AgCl(s) + Cu(NO3)2(aq)

mol AgNO3 :

= 58.5 : 169,87 g/mol

= 0.344

mol CuCl2 :

=21.7 : 134,45 g/mol

= 0.161

mol ratio : coefficient of AgNO3 : CuCl2 :

= 0.344/2 : 0.161/1

= 0.172 : 0.161

CuCl2  as a limiting reagent

mol AgCl :

= 2/1 x 0.161

= 0.322

Mass AgCl :

= 0.322 x 143,32 g/mol

= 46.149 g

mol remains(unreacted) for AgNO3 :

= 0.344-(2/1 x 0.161)

= 0.022

mass AgNO3 remains :

= 0.022 x 169,87 g/mol

= 3.74 g

8 0
3 years ago
What is Newton's first law of motion in your own words?
miv72 [106K]

Answer:

State Newton's first law of motion in your own words. According to Newton's first law of motion, the state of motion of an object does not change as long as the net force acting upon the object is zero. ... These two forces are called the action and reaction forces.

Explanation:

6 0
4 years ago
Read 2 more answers
Which image displays a chemical property about a substance? Choose all that apply
spin [16.1K]

Answer:

Answer: II and IV

Explanation: Flammability and the ability to rust are chemical properties because they change an object. I, III, and V are physical properties because it doesn't change the object's composition. This includes weight, the change in matter (solid to liquid), or change in volume.

Hope this helps!!!

Explanation:

8 0
3 years ago
Read 2 more answers
A sulfuric acid solution containing 571.6 g of H2SO4 per liter of aqueous solution has a density of 1.329 g/cm^3.Calculate:a. Ma
12345 [234]

Given :

Mass of H_2SO_4 is 571.6 g per liter .

Density of solution , \rho=1.329\ g/cm^3 .

To Find :

a. Mass percentage

b. Mole fraction

c. Molality

d. molarity of H2SO4 in this solution.

Solution :

Molar mass of H_2SO_4 , m = 1329 g/mol .

a ) Mass of H_2SO_4 contain in 1 liter is 1329 g .

mass \ \%=\dfrac{571.6}{1329}\times 100=43.01 \%

b ) Moles of H_2SO_4 = \dfrac{571.6\ g}{98\g/mol}=5.83\ mol .

Moles of H_2O = \dfrac{1329-571.6\ g}{18\ g/mol}=42.08\ mol .

Mole fraction =\dfrac{5.83}{5.83+42.08}=0.12 .

c ) Molarity of H_2SO_4  =\dfrac{5.83\ mol}{1 \ L}=5.83\ M .

Hence , this is the required solution .

8 0
3 years ago
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