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3 years ago

TRUE OR FALSE???? The name for the formula MgI2 is magnesium diiodide.

Chemistry

1 answer:

Svet_ta [14]3 years ago

3 0

Answer:

yes that is the name for the formula is magnesium diiodide

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A fast moving object goes a long distance in a _______ period of time

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4 years ago

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Luca made the following chart for Earth’s four basic movements. What needs to be correct on his chart? Rotation Speed Revolution

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3 years ago

Assuming the boiling point increased by 2 Â°C, what is the approximate molality of NaCl when the video ends? Kbp(water) = 0.512

makkiz [27]

Answer : The molality of NaCl is, 1.95 mol/kg

Explanation :

Formula used for Elevation in boiling point :

$\Delta T_b=i\times k_b\times m$

where,

$\Delta T_b$ = change in boiling point = $2^oC$

$k_b$ = boiling point constant for water = $0.512^oC/m$

m = molality

i = Van't Hoff factor = 2 (for electrolyte)

The dissociation $NaCl$ will be,

$NaCl\rightarrow Na^++Cl^{-}$

So, Van't Hoff factor = Number of solute particles = $Na^++Cl^{-}$ = 1 + 1 = 2

Now put all the given values in the above formula, we get:

$2^oC=2\times (0.512^oC/m)\times m$

$m=1.95mol/kg$

Therefore, the molality of NaCl is, 1.95 mol/kg

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3 years ago

Explain the lava lamp

Dahasolnce [82]

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3 years ago

Which sample of matter is a mixture<br> (1) Br2(l)<br> (2) K(s)<br> (3) KBr(s)<br> (4)KBr(aq)

SOVA2 [1]

Answer:

(4)KBr(aq)

Explanation:

A mixture is an impure substance made up of two or more substances that are joined together. Their composition is indefinite and not easily represented by a simple chemical formula.

KBr $_{aq}$ is a mixture because it made up of an aqueous solution of KBr. This suggests that the substance KBr is placed inside water.

Here, we have two states of matter which is the solid and the liquid coming together.

As with both mixtures, they can be separated by physical means, KBr aqueous solution can also be done this way.

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3 years ago