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monitta
3 years ago
9

PLEASE HELP 5TH GRADE SCIENCE Select the statement that correctly compares the sun and a comet.

Chemistry
2 answers:
Dima020 [189]3 years ago
8 0

Answer:

C

Explanation:

The sun is in the center of the solar system, planets, comets, and other things orbit around it

Basile [38]3 years ago
3 0

Answer:

c

Explanation:

The sun is at the center of the solar system, and the comet orbits around it.

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You wish to make 250. mL of 0.20 M KCl from a stock solution of 1.5 M KCl and DI water.
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The question requires us to use the dilution formula M_iV_i=M_fV_f, where M_i and V_i are the stock concentration and volume respectively, then M_f and V_f are the dilute concentration and volume respectively.

a. C_s_t_o_c_k= 1.5 M KCI, C_d_i_l_u_t_e=0.20M KCl, V_d_i_l_u_t_e=250ml KCl

b.M_iV_i=M_fV_f\\\implies V_i= \frac{M_fV_f}{M_i} = \frac{0.20M \times 250ml}{1.5M} = 33.3\ ml

To prepare the solution 33.3ml of 1.5M KCl is diluted to a total final volume of 250ml.


8 0
4 years ago
Use the data in the table above to calculate an approximate ΔH∘ in kilojoules for the synthesis of hydrazine from ammonia:
dmitriy555 [2]
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7 0
3 years ago
g You are testing the adsorptive properties of a new material (with very small particles), using methylene blue. You are in a ru
sveticcg [70]

Answer:

The data will be error free and more correct.

Explanation:

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