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vichka [17]
3 years ago
7

Sedimentary rocks are a formed below earths surface as magma b a type of foliated igneous rock c formed by great heat d formed f

rom already existing rocks that are weathered and eroded
Chemistry
1 answer:
Alekssandra [29.7K]3 years ago
5 0
Its either A or C hope one of them helps
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How many moles of HCL are in 20 ml sample of .10 M HCL
Lemur [1.5K]
<h3>Answer:</h3>

0.002 moles

<h3>Explanation:</h3>

Concept tested: Molarity

We are given;

  • Volume of HCl as 20 ml or 0.02 L
  • Molarity of HCl solution as 0.10 M

We are required to calculate the number of moles of HCl

What is molarity?

  • Molarity is the concentration of a solution in moles per liter

How is it calculated?

  • It calculated by dividing number of moles by volume;
  • Molarity = Number of moles ÷ Volume

To calculate the number of moles we rearrange the formula;

Moles = Molarity × Volume

In this case;

Moles of HCl = 0.10 M × 0.02 L

                      = 0.002 moles

Therefore, the number of moles of HCl is 0.002 moles

5 0
3 years ago
Write any five prevention of cancer ​
natulia [17]

Answer:

Don't use tobacco or tobacco-containing products

Maintain a healthy diet

Protect yourself from the sun, make sure to use sunscreen

Go to the doctor regularly, for general checkups

Stay physically active

Explanation:

hope this helps :)

8 0
2 years ago
Somebody answer please a picture is attached!??
DanielleElmas [232]
9.2 that is the answer
7 0
3 years ago
What is the difference between the atomic number and the mass number of an element?
DedPeter [7]

Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom in amu, or atomic mass units. Atomic mass is the average mass of all the isotopes of a certain type. It is a weighted average that takes into account the abundances of all of the different isotopes

hope this helps :)

8 0
3 years ago
Read 2 more answers
What reaction might we use to synthesize nickel sulfate,niso4? Write equations for acid base neutralization. Include states in y
il63 [147K]

Answer:

Here's what I get  

Explanation:

1. Nickel sulfate

base + acid ⟶ salt + water

NiSO₄ is a salt of the base Ni(OH)₂ and the acid sulfuric acid.

Hydroxides of transition metals are insoluble; most sulfates are soluble.

\underbrace{\hbox{Ni(OH)$_{2}$(s)}}_{\hbox{base}} + \underbrace{\hbox{H$_{2}$SO$_{4}$(aq)}}_{\hbox{acid}} \longrightarrow \, \underbrace{\hbox{NiSO$_{4}$(aq)}}_{\hbox{salt}} + \underbrace{\hbox{2H$_{2}$O(l)}}_{\hbox{water}}

2. Carbonate + acid

Most carbonates are insoluble.

They react with acids to form carbonic acid (H₂CO₃), which decomposes into water and carbon dioxide.

\rm NiCO_{3}(s) + H_{2}SO_{4}(aq) \longrightarrow \, NiSO_{4}(aq) + H_{2}O(l) + CO_{2}(g)

5 0
3 years ago
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