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stira [4]
3 years ago
6

Please help if you can :)

Chemistry
2 answers:
drek231 [11]3 years ago
8 0

Answer:

B heavier elements

Explanation:

jonny [76]3 years ago
5 0

Answer:

The correct answer is B) heavier elements

Explanation:

In this reaction, two or more lighter atoms combine to form a heavier atom.

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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.
Nitella [24]

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
How do the strength and the cohesion of clay-rich regolith or soil change with the addition of water?
lisov135 [29]

Answer:

Water lowers the strength and cohesion of clay-rich regolith or soil.

Explanation:

Water can seep into the soil or clay-rich regolith and replace the air in the pore space of the soil or regolith. Water will completely surrounds all the grains of the clay-rich regolith and breaks the bonds in between the grains, that is eliminating all grain to grain contact of the regolith. When the regolith becomes saturated with water, the angle of repose is reduced to very small values and the regolith tends to loose its form.

6 0
4 years ago
what is the volume of a sample of liquid mercury that has a mass of 76.2 g, given that the density of mercury is 13.6 g/ml?
lilavasa [31]
24 square root . i know im wrong but so what 
6 0
3 years ago
7. What is the missing part of this fusion equation?
Viefleur [7K]

Answer:

2 1 H

Explanation:

We must remember that a nuclear equation is only said to be balanced when the mass and charges on both sides of the nuclear reaction equation correspond.

If we look at the nuclear equation; the total mass on the right hand side is 4 units while the total charge on the right hand side is two units.

This implies that the missing particle must be 2 1 H

3 0
3 years ago
You wish to set up an electrochemical cell that has a copper anode and an
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I think cathode should be silver or gold
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4 0
3 years ago
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