2 years ago

Question 8 of 10

Chemistry

2 answers:

zhuklara [117]2 years ago

8 0

Answer: i Choose the sun

because it has mass

Explanation: matter is anything that has mass and occupies space / Volume

and the sun has mass though it is not a solid one, and is made up of matter

HOPE THIS HELPSS!!!!

Svetlanka [38]2 years ago

5 0

The answer would have to be letter b. Energy

You might be interested in

1. Magnesium chloride solution reacts with silver nitrate solution to form magnesium nitrate

Whitepunk [10]

a. 1,4332 g

b. 7.54~g

<h3>Further explanation</h3>

Given

Reaction

MgCl2 (s) + 2 AgNO3 (aq) → Mg(NO3)2 (aq) + 2 AgCl (s)

20 cm of 2.5 mol/dm^3 of MgCl2

20 cm of 2.5 g/dm^3 of MgCl2

Required

the mass of silver chloride - AgCl

Solution

a. mol MgCl2 :

$\tt 20~cm^3=20\times 10^{-3}~dm^3\\\\mol=M\times V\\\\mol=2.5~mol/dm^3\times 20\times 10^{-3}DM^3=0.05$

From equation, mol AgCl = 2 x mol MgCl2=2 x 0.05=0.1

mass AgCl(MW=143,32 g/mol)= 0.1 x 143,32=1,4332 g

b. mol MgCl2 (MW=95.211 /mol):

$\tt mol=M\times V\\\\mol=\dfrac{2.5~g/dm^3}{95,211 g/mol}=0.0263~mol/dm^3$

From equation, mol AgCl = 2 x mol MgCl2=2 x 0.0263=0.0526

mass AgCl(MW=143,32 g/mol)= 0.0526 x 143,32=7.54~g

6 0

2 years ago

A 32.78 g sample of a substance is initially at 22.7 °c. after absorbing 2017 j of heat, the temperature of the substance is 173

larisa86 [58]

Heat= mass * change in temperature* specific heat
specific heat=409 J/kg K

3 0

3 years ago

1) What is the same in the Lithium atom and Lithium ion?

irakobra [83]

Becauseerter weyweywe ewrysetywr

7 0

3 years ago

What is the name for Chlorines anion?

frez [133]

The chloride ion /ˈklɔːraɪd/ is the anion (negatively charged ion) Cl−

8 0

3 years ago

Is nitrogen an elementary substance or a compound

Charra [1.4K]

Answer:

Nitrogen (N2) are not compounds because each is composed of a single element.

7 0

3 years ago