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Naddik [55]
2 years ago
6

2) The pH of 1x10-1M (HNO3) solution is: A)1 B) 1.3 C)5 D)2

Chemistry
1 answer:
nikdorinn [45]2 years ago
8 0

Concentration of H+ ions in HNO3 solution is 10⁻¹ which is equal to 0.1 M

\bf  \: pH \:  =  - log[{h}^{ + }]

putting the value we get

\sf \dashrightarrow  \: pH \:  =  - log \: [ \frac{1}{10}] \\  \\ \sf \dashrightarrow  \: pH \: =   - log \: {10}^{ - 1}  \\  \\ \sf \dashrightarrow  \: pH \: = 1

So, the required option is A) 1

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Which ONE of the following is an oxidation–reduction reaction? A) PbCO3(s) + 2 HNO3(aq) ––––> Pb(NO3)2(aq) + CO2(g) + H2O(l)
sveta [45]

Answer:

E) C₂H₄(g) + H₂(g) ⇒ C₂H₆(g)

Explanation:

Which ONE of the following is an oxidation–reduction reaction?

A) PbCO₃(s) + 2 HNO₃(aq) ⇒ Pb(NO₃)₂(aq) + CO₂(g) + H₂O(l). NO. All the elements keep the same oxidation numbers.

B) Na₂O(s) + H₂O(l) ⇒ 2 NaOH(aq). NO. All the elements keep the same oxidation numbers.

C) SO₃(g) + H₂O(l) ⇒ H₂SO₄(aq). NO. All the elements keep the same oxidation numbers.

D) CO₂(g) + H₂O(l) ⇒ H₂CO₃(aq). NO. All the elements keep the same oxidation numbers.

E) C₂H₄(g) + H₂(g) ⇒ C₂H₆(g). YES. <u>C is reduced</u> and <u>H is oxidized</u>.

8 0
3 years ago
Wetlands provide habitats for many living things because of their sheltered waters and what other feature?
SIZIF [17.4K]

Answer:

large supply of nutrients.

Explanation:

In a wetland, the soil is covered by water or is almost covered by water. This water may be coming upwards from an underground aquifer. Wetlands are covered by water for most of the year.

They are sheltered waters and do provide habitats for many living things.

Nutrients such as; Carbon sulfur, phosphorus, carbon, and nitrogen are cycled within the soil of wetlands hence wetlands have a large supply of nutrients.

5 0
2 years ago
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Lady_Fox [76]

Answer: The fusion of hydrogen to form helium

Explanation:

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2 years ago
In a given chemical reaction the energy of products is great than the energy of the reactants which statement is true? (Hint wha
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The true statement is (A) energy is absorbed during the reaction
For the products to have more energy, they must absorb it from the surrounding.
6 0
3 years ago
How many moles of sodium hydroxide are there in 1.0mL of 2.0M NaOH
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moles= Molarity x Liters

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Liters= 0.0010 Liters  ---------------->>>>>>>>>> 1.0 mL= 0.0010 Liters

moles= 2.0 M x 0.0010 Liters= 0.0020 moles
4 0
2 years ago
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