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Aleks04 [339]
4 years ago
10

How does a chemical equation express relationship between substance?

Chemistry
1 answer:
Vedmedyk [2.9K]4 years ago
8 0
In a chemical equation, the reactants are written on the left, and the products are written on the right.The coefficients next to the symbols of entities indicate the number of moles of a substance produced or used in the chemical reaction.The reactants and products are separated by an arrow, usually read aloud as "yields."Chemical equations should contain information about the state properties of products and reactants, whether aqueous (dissolved in water) solid (s), liquid (l), or gas (g).

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Ba(OH)2:_______.
vova2212 [387]

Answer: D

Explanation: Expand this (OH)2 you will get 2O, 2H

Hence 1Ba, 2O, 2H

5 0
3 years ago
What mass of carbon monooxide must be burned to produce 175 kJ of heat under standard state condaitions?
Sphinxa [80]

Answer:

17.3124 grams

Explanation:

Given;

Amount of heat to be produced = 175 kJ

Molar mass of the carbon monoxide = 12 + 16 = 28 grams

Now,

The standard molar enthalpy of carbon monoxide = 283 kJ/mol

Thus,

To produce 175 kJ heat, number of moles of CO required will be

= Amount heat to be produced /  standard molar enthalpy of CO

or

= 175 / 283

= 0.6183

Also,

number of moles = Mass / Molar mass

therefore,

0.6183 = Mass / 28

or

Mass of the CO required = 0.6183 × 28 = 17.3124 grams

7 0
4 years ago
Suppose an object is moving through space in a straight line. What could cause the object to start moving in a circle?
MAVERICK [17]
It could pass by a large enough object that has enough gravity to pull the object into its orbit and the object would stay in orbit because it has centripetal force.
8 0
4 years ago
Read 2 more answers
What is the other product for this reaction? Hbr + NaOH —&gt; ( select 2)
ratelena [41]

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: HBr + NaOH = nabr + h2o

Explanation:

I hope this helped!

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- Zack Slocum

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6 0
3 years ago
What is the pH of [H+]=0.0000000035 and is it acidic, basic, or neutral?
natima [27]

Answer:

The pH is 8,45 and it is basic.

Explanation:

The pH is a measure that gives us an idea of the acidity or alkalinity of a solution. It is calculated as:

pH = -log (H +)= -log (0.0000000035)=8, 46

The pH scale ranges from values of 0 to 14 (less than 7.0 is acidic and greater than 7.0 is basic, a pH = 7.0 is neutral).

In this case, the solution is basic (value greater than 7.0 ).

8 0
3 years ago
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