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zysi [14]
2 years ago
10

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
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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
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What is the name for Chlorines anion?
frez [133]
The chloride ion /ˈklɔːraɪd/ is the anion (negatively charged ion) Cl−
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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
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