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Ratling [72]
3 years ago
15

What mass of salt is needed to prepare 600 mL of a 4g/L solution?

Chemistry
1 answer:
OLga [1]3 years ago
5 0
THE ALTERNATIVE IS 4.8g alternative c
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What is the missing value​
Korvikt [17]

Answer:

72

Explanation:

The pattern here may be hard to find at first, but it's this: the number in the middle of the triangle = (number at lower left corner of triangle x number at upper vertex of triangle) + (number at upper vertex of triangle x number at lower right corner of triangle).

Thus, for the missing value...

Missing value = (3x8) + (8x6) = 24+48 = 72.

Could you tell me what concept in chemistry relates to this? I'm interested.

Also check out stylesben's answer. Seems like there's several ways of doing this.

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A neutron walks into a gas station to buy some snacks. He asks the cashier ,"How much?" The cashier replies, "For you? No charge
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A neutron is neutral and a proton is positive and a electron is negative
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Identify the following reaction type using the chemical equation below*
OLEGan [10]

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its C. a combustion reaction

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Which characteristic do valence electrons indicate about reactions between atoms?
AURORKA [14]

Answer:

the answer is Bond Number

Explanation:

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3 years ago
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What is the delta H fusion used to calculate volume of a liquid frozen that produces 1 kg of energy?
gulaghasi [49]

Answer:

The correct option is C. 1 kJ x 1/ΔHfus x g/mol x ml/g liquid

Explanation:

The change in enthalpy of fusion (ΔHfus) has units of energy divided into moles of substance:

ΔHfus = energy/mol of substance = J/mol or KJ/mol

Thus, we multiply the kJ of energy produced by the inverse of ΔHfus (in kJ/mol) we obtain the moles of substance:

energy (kJ) x 1/ΔHfus (mol/kJ) = moles of substance(mol)

Then, if we multiply the moles of substance by the molecular weight of the substance (in g/mol) we obtain the grams:

moles of substance(mol) x molecular weight (g/mol) = grams of substance (g)

Finally, if we multiply the grams of substance (in g) by the density of the substance (in g/ml) we obtain the volume (in ml):

grams of substance (g) x 1/density (ml/g) = volume (ml)

We combine all these parts to obtain the equation for the volume required to produce 1 kJ of energy:

energy (kJ) x 1/ΔHfus (mol/kJ) x molecular weight (g/mol) x 1/density (ml/g)

Therefore, the correct option is:

C → 1 kJ x 1/ΔHfus x g/mol x ml/g liquid

5 0
3 years ago
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