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Marysya12 [62]
2 years ago
5

Complete the sentence!

Chemistry
2 answers:
mars1129 [50]2 years ago
4 0

Answer:

A : shelter

B : water

C : food

Explanation:

too be honest i think its all of them-

Maksim231197 [3]2 years ago
3 0

Answer:

I personally think it would be all of the above

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How much gold is harvested per ton of earth from the underground mine?
ozzi
If you are referring to NOVA - Hunting the Elements documentary, then about one ounce per ton of earth from the underground mine. One haul equals to about 400 tons, which means there are about 25 pounds of gold per every truck, and one ounce costs $1,800. 
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3 years ago
Explain how heat is transferred by conduction​
Afina-wow [57]

Answer:

<em>process by which heat energy is transmitted through collisions between neighboring atoms or molecules. </em>

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2 years ago
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Calculate the density of an<br> object with a mass of 20 g<br> and a volume of 2.3 mL.
Mrrafil [7]

Answer:

8.7g/mL

Explanation:

I used the density formula to solve. d=m/v= 20g/2.3mL

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3 years ago
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Calculate the pH at of a 0.10 Msolution of anilinium chloride . Note that aniline is a weak base with a of . Round your answer t
notsponge [240]

The question is incomplete, here is the complete question:

Calculate the pH at of a 0.10 M solution of anilinium chloride (C_6H_5NH_3Cl) . Note that aniline (C6H5NH2) is a weak base with a pK_b of 4.87. Round your answer to 1 decimal place.

<u>Answer:</u> The pH of the solution is 5.1

<u>Explanation:</u>

Anilinium chloride is the salt formed by the combination of a weak base (aniline) and a strong acid (HCl).

To calculate the pH of the solution, we use the equation:

pH=7-\frac{1}{2}[pK_b+\log C]

where,

pK_b = negative logarithm of weak base which is aniline = 4.87

C = concentration of the salt = 0.10 M

Putting values in above equation, we get:

pH=7-\frac{1}{2}[4.87+\log (0.10)]\\\\pH=5.06=5.1

Hence, the pH of the solution is 5.1

8 0
3 years ago
Determine the number of protons, neutrons, and electrons in the following:
Finger [1]

The ⁴⁰₁₈X is the symbol for ⁴⁰₁₈Ar - atom and it has 18 protons, 18 electrons, and 22 neutrons.

<h3>What is Mass number ?</h3>

Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.

In the given element,  ⁴⁰₁₈X,  Subscript 18 is the number of proton and is also equal to the number of electron. While supercript 40 is the atomic mass.

The number of neutrons is given by subtracting the proton number from the mass number.

Therefore,

Number of Neutron = Mass Number - Atomic Number

                                 = 40 - 18

                                 = 22 Neutrons

Learn more about Mass number here ;

brainly.com/question/18803094

#SPJ1

8 0
1 year ago
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