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uranmaximum [27]
2 years ago
6

Pls answer this I will mark u as the brainliest...what is the formula of sodiam carbonate ​

Chemistry
2 answers:
kodGreya [7K]2 years ago
8 0

Explanation:

Sodium Carbonate = Na2CO3

Hope it helps ya

cestrela7 [59]2 years ago
6 0

Answer:

The answer is Na2CO3.

- Sodium carbonate = Na2CO3

- It is used as an antacid to treat heartburn, indigestion, and upset stomach. Sodium bicarbonate is a very quick-acting antacid.

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The enthalpy of combustion of hard coal averages -35 kJ/g, that of gasoline, 1.28 x 105 kJ/gal. How many kilograms of hard coal
Ganezh [65]

Answer:

3.657 kg

Explanation:

Given:

Enthalpy of combustion of hard coal = -35 kJ/g

Enthalpy of combustion of gasoline = 1.28 × 10⁵ kJ/gal

Density of gasoline = 0.692 g/mL

now,

The heat provide 1 gallon of gasoline provide =  1.28 × 10⁵ kJ

and,

heat provided by the 1 gram of coal  = 35 kJ

or

1 kJ of heat is provided by (1/35) gram of hard coal

therefore,

For 1.28 × 10⁵ kJ of heat, mass of hard coal =  1.28 × 10⁵ kJ × (1 / 35)

or

For 1.28 × 10⁵ kJ of heat, mass of hard coal = 3657.14 grams = 3.657 kg

3 0
3 years ago
Could someone please help!
bezimeni [28]
Im pretty sure that the current will increase so the answer is A . Hope that helps
8 0
3 years ago
28. After 3 substances are mixed, an odor emits
Lyrx [107]

Answer:

a. chemical change

Explanation:

A chemical change can cause an odor, however a physical change cannot, and the use of thermal energy will only make an object colder, not give it an odor.

7 0
2 years ago
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Briefly define weather,season and Climate.​
inn [45]

Answer:

this is an answer to your question in explanation

Explanation:

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season is one of the four division in a calendar year

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4 0
3 years ago
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PLEASE HELP :-)
alex41 [277]
6.4 x 10^-7 = [CO]^2[O2]/ [CO2}^2 = ( 2.0 x 10^-3)^2 ( 1.0 x 10^-3)/ [CO2]^2 = 
<span>=4.0 x 10^-9 / [CO2]^2 </span>

<span>[CO]= sq.rt ( 4.0 x 10^-9)/ 6.4 x 10^-7=7.9 x 10^-2 M </span>


<span>2.6 x 10^-3 = [I]^2 / [I2] = [I]^2 / 0.95 </span>
<span>[I]= sq.rt ( 2.6 x 10^-3 x 0.95)=5.0 x 10^-2 M </span>

<span>Ksp = [Ba2+][CO32-] = ( 1.1 x 10^-4)^2=1.2 x 10^-8</span>
6 0
3 years ago
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