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Mashcka [7]
3 years ago
14

Science help this is my last question

Chemistry
1 answer:
astraxan [27]3 years ago
3 0

Answer:

P waves travel faster than other waves

Explanation:

P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.

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Consider the following equilibrium:
Colt1911 [192]

Answer:

a. If the reaction mixture initially contains only OF2(g), then at equilibrium, the reaction mixture will consist of essentially only O2(g) and F2(g).

Explanation:

The answer is a) because the value for Kp is really close to zero (having x10⁻¹⁵), this means that at equilibrium O₂ and F₂ will be significantly more present than OF₂.

6 0
4 years ago
A chemist prepares a solution of zinc oxalate by measuring out of zinc oxalate into a volumetric flask and filling the flask to
anyanavicka [17]

<u>Answer:</u> The concentration of zinc oxalate is 1.7\times 10^{-11}M

<u>Explanation:</u>

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

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}

We are given:

Moles of zinc oxalate = 0.0075\mu mol=7.5\times 10^{-9}mol    (Conversion factor:  1mol=10^{6}\mu mol  )

Volume of solution = 450 mL

Putting values in above equation, we get:

\text{Molarity of solution}=\frac{7.5\times 10^{-9}\times 1000}{450mL}\\\\\text{Molarity of solution}=1.66\times 10^{-11}M=1.7\times 10^{-11}M

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 2.

Hence, the concentration of zinc oxalate is 1.7\times 10^{-11}M

4 0
3 years ago
What’s the total mass of the rock sample
mamaluj [8]

Answer:

545.2

Explanation:

To read a beam balance, you need to add together the numbers that each balance reads.

The first beam reads 500.

The second beam reads 40.

The third beam reads 5.2.

500 + 40 + 5.2 = 545.2

The total mass of the rock sample is 545.2.

4 0
3 years ago
#5.) Explain why the rock cycle is referred to as a "cycle".
Natalka [10]
The rock cycle is referred to as cycle because it repeats over and over again. The definition of cycle is a series of events that are regularly related in the same order. So with the rock cycle they stay in the same order and repeat.
Hope this helps :)
5 0
4 years ago
Read 2 more answers
true or false: Mendeleev's arrangement of elements in the periodic table was based on the observations and experiments of his pr
Oduvanchick [21]

This answer is true

7 0
4 years ago
Read 2 more answers
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