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Andrej [43]
3 years ago
12

Given the formula for a compound:

Chemistry
1 answer:
Elina [12.6K]3 years ago
8 0

Answer:

3.

Explanation:

4 carbon equals butane

O=C-NH2 equals amide

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1. H2SO4, sulfuric acid, contains three different types of atoms: hydrogen (H), sulfur (S), and oxygen (O). Each of these atoms
sammy [17]

Answer:

The blanks can be completed with words in the following sequence

1) elements

compound

2) atom

3) matter

4) compound

5) chemistry

6) reactants

product

Explanation:

In H2SO4, atoms of hydrogen, sulphur and oxygen represent different elements that are combined to form the compound.

The smallest indivisible unit of matter that still retains all the properties of matter is an atom. Matter is anything that has weight and occupy space.

Atoms combine in fixed ratios to form compounds. Chemistry studies matter scientifically and pays specific attention to the changes that matter undergoes.

Considering the reaction of photosynthesis, water and carbon dioxide combine to give glucose so the water and carbon dioxide  are reactants while the glucose is the product of the reaction.

8 0
3 years ago
Limestone (CaCO₃) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts
Alex

To completely eliminate all of the SO2 produced by coal burning, 1250.62 kg of CaCO3 are required.

Equation

CaCO₃ --->CaO + CO2

2 CaO +2 SO2 ----> 2 CaS + 3O2

overall reaction

2 CaCO₃ +2 SO2 ---> 2 CaS + 3O2 + 2CO2

m(S)=8,5 x 10^{4}*0.0033=280.5 kg

n(SO2)= m/Ar(S) = 8,75 x 10^{3}mol

n(CaCO3 needed) = n(SO2) / percent yield

n(CaCO3 needed) = 8.75 x 10^{3}mol / 0.7

​n(CaCO3 needed)= 1.25 x 10 ^4 mol

m(CaCO3 needed) = n x Mr = 1250.62kg

To completely eliminate all of the SO2 produced by coal burning, 1250.62 kg of CaCO3 are required.

<h3>Where Is Limestone Found?</h3>

Numerous locations that produce limestone have been recognized by geologists throughout the world. Between 30o N and 30o S latitude, the most of them are in shallow waters. The Caribbean Sea, Indian Ocean, Persian Gulf, and the Gulf of Mexico are the most well-known shallow water locations.

learn more about limestone here

brainly.com/question/15148363

#SPJ4

5 0
2 years ago
A spherical ball of lead has a diameter of 2.5 cm . What is the mass of the sphere if lead has a density of 11.34 g/cm3? (The vo
Paladinen [302]
Mass =  volume  x   density

volume = πr²
    since Diameter = 2.5 cm
    then   radius = 1.25cm

∴ volume  =  π  x  (1.25cm)³
                 ≈  6.1359 cm³

Thus mass  =  6.1359 cm³  x  11.34  g / cm³
                    =  69.58 g
3 0
3 years ago
Read 2 more answers
The digestive tract converts food into materials and energy. True False
dolphi86 [110]

Answer:

true

Explanation:

The digestive tract is made up of organs that food and liquids travel through when they are swallowed, digested, absorbed, and leave the body as feces. These include the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus.

4 0
3 years ago
Oxygen gas combines with hydrogen gas to produce water.
Eddi Din [679]

That is true, water contains hydrogen and oxygen.

6 0
3 years ago
Read 2 more answers
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