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natita [175]
2 years ago
10

Why are fossil fuels still the primary way humans harness power

Chemistry
1 answer:
Lubov Fominskaja [6]2 years ago
3 0

Answer:

Fossil fuels are still the number primary way to harness power because we know how to do it very well and it cost less than other any other way to harness energy

Explanation:

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umka2103 [35]
I think it's Methane
8 0
3 years ago
How are molarity and osmolarity different? What property of salts necessitates this distinction? How does this property affect t
lubasha [3.4K]

<u>Explanation:</u>

The number of moles that are present in a liter of a solution is called Molarity. Mole is the unit of Molarity.The concentration of the solutes that are present in a solution refers to Osmolarity . The unit is osmol. This helps in observing the movement of water from one side to another side of a semipermeable membrane.

The main property of salts that helps to understand the differentiation between the molarity and osmolarity is the salts Ionization.  One mole Na+ and one mole of Cl- is produced by the dissociation of a mole of sodium chloride occurs. The diffusion of water is the osmosis. Here, the one molar sodium chloride solution produces a osmotic pressure which is high than one molar glucose solution and this will not undergo dissociation.

4 0
3 years ago
An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample r
lyudmila [28]

<u>Answer:</u> The correct answer is Option 3.

<u>Explanation:</u>

All the radioisotope decay processes follow first order kinetics.

Rate law expression for first order kinetics is given by the equation:

k=\frac{2.303}{t}\log\frac{a}{a-x}

where,  

k = rate constant  = ?

t = time taken for decay process = 8.32 seconds

a = initial amount of the reactant  = 80 mg

a - x = amount left after decay process  = 20 mg

Putting values in above equation, we get:

k=\frac{2.303}{8.32sec}\log\frac{80g}{20}\\\\k=0.166sec^{-1}

The equation used to calculate half life for first order kinetics:

t_{1/2}=\frac{0.693}{k}

where,

t_{1/2} = half life of the reaction = ?

k = 0.166sec^{-1}

Putting values in above equation, we get:

t_{1/2}=\frac{0.693}{0.166sec^{-1}}=4.16sec

Hence, the correct answer is Option 3.

5 0
2 years ago
Read 2 more answers
Protons<br> Charge:<br><br> Mass:<br><br> Location:<br><br> Role in the atom:
Olegator [25]

Answer:

Protons are positively charged. The mass is slightly lower than a neutron.The location of a proton is nucleus. The the role of a proton is to help bind the nucleus together.

Explanation:

6 0
2 years ago
which has more calories : table sugar or aspartame ? what does synthetic gas (water gas) consist of ?
Dmitriy789 [7]

Answer:

1: table sugar has more calories

2: Hydrogen and carbon monoxide and smaller quantities of methane, carbon dioxide, and hydrocarbons

Explanation:

Give brainliest

5 0
2 years ago
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