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3 years ago

The + symbol, on the products side, in a chemical equation means

Chemistry

1 answer:

malfutka [58]3 years ago

7 0

Explanation:

Used to separate one reactant or product from another

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what happens to the reaction 2NO2 <----> N2O4 + 57.2 kJ when the temperature of the reaction is increased?

ioda

1) Equilibrium reaction:

2NO2 <----> N2O4 + 57.2 kJ

2) The quantity 57.2 kJ on the right side indicates that the reaction generates heat, i.e. it is exothermic.

When you increase the temperature of an equilibrium chemical reaction that is exothermic you displace the equilibrium to the left, meaningh that more ractant will be formed..

Answer: the equilibrium will be displaced to the left producing more reatant, NO2.

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3 years ago

How is carbon dioxide released by animals? *

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Answer:

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Explanation:

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2 years ago

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What volume does .0685 mol of gas occupy at STP? 1mole =22.4

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V = nRT/P
V = 0.685 mol*(.0821 L*atm/K*mol)*273 K/1 atm

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2 years ago

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Which part of a chemical formula indicates the number of copies of molecules or compounds? A. plus signs B. subscripts C. coeffi

nadya68 [22]

I think it is C. coefficients but I don't know what subscripts are

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3 years ago

WILL MARK BRAINLIEST!!!!

Lyrx [107]

Answer:

5.702 mol K₂SO₄

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Compounds
Moles

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 993.6 g K₂SO₄

[Solve] moles K₂SO₄

Step 2: Identify Conversions

[PT] Molar Mass of K: 39.10 g/mol

[PT] Molar Mass of S: 32.07 g/mol

[PT] Molar mass of O: 16.00 g/mol

Molar Mass of K₂SO₄: 2(39.10) + 32.07 + 4(16.00) = 174.27 g/mol

Step 3: Convert

[DA] Set up: $\displaystyle 993.6 \ g \ K_2SO_4(\frac{1 \ mol \ K_2SO_4}{174.27 \ g \ K_2SO_4})$
[DA] Divide [Cancel out units]: $\displaystyle 5.7015 \ mol \ K_2SO_4$

Step 4: Check

Follow sig fig rules and round. We are given 4 sig figs.

5.7015 mol K₂SO₄ ≈ 5.702 mol K₂SO₄

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3 years ago