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2 years ago

Jati has a sample of a solid.Suggest how he could find out weather the solid is a pure substance or a mixture of substances?

Chemistry

1 answer:

Vsevolod [243]2 years ago

5 0

Answer:

The melting point range of a substance is the temperature range from which the first crystal starts to melt, to the temperature at which the last crystal finishes melting. An impure substance is a type of mixture, so melting points can be used to find out if a substance is pure or impure.

pls mark brainiest

Explanation:

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In 1906, a 600 g diamond was found at the Premier Mine in South Africa- the world's largest uncut diamond. Suppose the diamond's

lys-0071 [83]

Answer:

852000 J

Explanation:

The following data were obtained from the question:

Mass (M) = 600 g

Change in temperature (ΔT) = 2 °C

Specific heat capacity (C) = 710 J/g℃

Heat transfered (Q) =?

Thus, we can obtain the the heat transfered to the diamond by using the following formula:

Q = MCΔT

Q = 600 × 710 × 2

Q = 852000 J

Therefore, the energy transfered to the diamond by heat is 852000 J

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3 years ago

When electrical ___ betweens protons is greater than strong forces, the nucleus will be unstable.

Nimfa-mama [501]

Answer:

repulsion

Explanation:

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2 years ago

2. Peppered moths are typically either white with black speckles or black with white speckles. Before the Industrial Revolution,

Viktor [21]

The pollution in the cities darkened basically everything, meaning the lighter colored moths were more visible, and were targeted. The dark ones, as a rule, lived whereas the light ones did not. This is an example of evolution.

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3 years ago

I'm sad to announce that this will most likely be my last day on brainly until next year, and to all the friends I've made on he

ohaa [14]

Answer:

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3 years ago

What can be said about a small Ksp value?

fredd [130]

Answer:

The correct answer is option B.

Explanation:

Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.

The equation for the ionization of the magnesium hydroxide is given as:

$A_xB_y\leftrightharpoons xA^{y+}+yB^{x-}$

xS yS

Here, S = concentration of compound dissolved in solvent via dissociation

Expression for the solubility product of $A_xB_y$ will be:

$K_{sp}=[A^{y+}]^x[B^{x-}]^y\\\\K_{sp}=(xS)^x\times (yS)^y$

As we can see,

$K_{sp}\propto [S]$

Higher the value of [S] more will be solubility of compound in a solvent.Hence, more soluble it will be.
Lower the value of [S] less will be solubility of compound in a solvent.Hence, less soluble it will be.

Hence, the correct answer is option B.

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3 years ago