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Xelga [282]
2 years ago
14

Help me please i nedd hep

Chemistry
1 answer:
mojhsa [17]2 years ago
3 0

Answer:

7 to 5

Explanation:

power of 500 to 5

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what is the pH of a solution prepared from solid, neutral 2-nitrophenol providing a fromal concentration of 0.0353M, given that
REY [17]

Answer:

pH = 4.34

Explanation:

pH= -1/2(logKa) -1/2(log C)

= -1/2( log 5.98*10^-8) -1/2(log 0.0353)

=-1/2(-7.22)-1/2(-1.45)

=3.61+0.725= 4.34

7 0
3 years ago
A film crew is setting up a scene to show the effects of a blast wave on nearby cars. Why do you think the cars are hanging from
PSYCHO15rus [73]

The cars are hanging from cables so that there is presence of more medium of propagation to make it look real.

<h3>What is a Blast wave?</h3>

This is referred to as a violent propagating disturbance, produced by an explosion in air.

Hanging the cars in the air will ensure an accurate description of the effect of the blast wave on them.

Read more about Blast wave here  brainly.com/question/13446916

3 0
2 years ago
NaOH+HCl-&gt;............
Oxana [17]

Answer:

NaCl+H20

Explanation:

It is a neutralisation reaction in which NaOH is a base and HCl is an acid. On reaction it forms salt and water.

Please mark as brainliest

3 0
3 years ago
Read 2 more answers
What is Δn for the following equation in relating Kc to Kp?CH4(g) + H2O(g) ↔ CO(g) + 3 H2(g)-120-3-2
Sindrei [870]

Answer: Δn for the following equation in relating Kc to Kp is 2.

Explanation:

The balanced chemical equation is:

CH_4(g)+H_2O(g)\rightleftharpoons CO(g)+3H_2(g)

Relation of K_p with K_c is given by the formula:

K_p=K_c(RT)^{\Delta n_g}

Where,

K_p = equilibrium constant in terms of partial pressure

K_c = equilibrium constant in terms of concentration

R = Gas constant

T = temperature

\Delta n_g = change in number of moles of gas particles = n_{products}-n_{reactants}=4-2=2

Putting values in above equation, we get:

K_p=K_c\times (RT)^{2}

Thus the value of Δn for the following equation in relating Kc to Kp is 2.

5 0
3 years ago
To which factor can the principles of Nicholas Steno be applied?
Tcecarenko [31]

Answer:

the rock layers of the Grand Canyon

Explanation:

Steno's law are laws that applied to sedimentary rocks. These laws helps in understanding sedimentary sequences.

Sedimentary rocks are derived from the deposition of pre-existing rocks in basins. In order to understand some important relationships between these rock layers, Steno's  law offer a good insight.

Steno's law are often applied when we want to do relative dating of rock layers. Some of the laws are:

  • Law of superposition of strata
  • Law of original horizontality
  • Law of lateral continuity
  • Law of inclusion
  • Law of fossil and fauna succession

These laws helps to interpret sedimentary rock sequences better.

7 0
4 years ago
Read 2 more answers
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