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2 years ago

Difference between alloys and mixtures?

Chemistry

2 answers:

ankoles [38]2 years ago

6 0

Answer:

All alloys are made up of different metals and have metallic properties. A mixture, on the other hand, is a substance that is made up of a combination of other substances where no chemical reaction occurs between the substances. ... If the mixture is a mix of various metallic elements, then the mixture is an alloy.

Explanation:

dedylja [7]2 years ago

5 0

Answer:

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Maurinko [17]

I think it is c mercury

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3 years ago

Read 2 more answers

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.

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3 years ago

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Musya8 [376]

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2 years ago

For two variables in a direct proportion, what is the result of doubling one variable?

Airida [17]

Answer:

the other variable is also doubled

Explanation:

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3 years ago

Some thermodynamic properties of ethanol are listed in the table. Thermodynamic Properties Property Value c (solid) 0.5 J/g °C c

alexira [117]

<h2>Answer </h2>

Option C - 320J

<u>Explanation </u>

Since ethanol solid at −120 °C and is only cooling down (it won’t change states) . The amount of Thermodynamic properties values c is given in form of solid, liquid and gas. Amount of energy released is calculated below.

Formula,

= change in temperature x specific heat capacity for solid ethanol x 40

=> 0.5 x 16x 40 = 320J

Therefore, the 320J of heat is released when 40.0g of ethanol cools.

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3 years ago