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balandron [24]
3 years ago
7

A glucose solution that is prepared for a patient should have a concentration of 180 g/L. A nurse has 18 g of glucose. How

Chemistry
1 answer:
Irina-Kira [14]3 years ago
6 0
<h3>Answer:</h3>

0.10 L

<h3>Explanation:</h3>

The concentration of glucose  is given as 180 g/L

The mass of glucose is 18 g

  • Concentration in g/L is calculated by dividing mass of the solute by the volume of the solution.
  • When calculating molarity on the other hand, we divide number of moles of the solute by the volume  of the solution.
  • Concentration in g/L = Mass of solute ÷ Volume

Rearranging the formula,

Volume = Mass of the solute ÷ concentration

             = 18 g ÷ 180 g/L

            = 0.10 L

Therefore, volume of water is 0.10 L

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3 years ago
For the reaction 2HNO3 + Mg(OH)2 → Mg(NO3) 2 + 2H2O, how many grams of magnesium nitrate are produced from 4 grams of nitric aci
kotegsom [21]

Answer:

First check to make sure you have a balanced equation

Second use mole ratios to set up what you need to know

Finally convert the moles to grams using the correct molecular weight

I will get you started

According to the reaction above, one mole of Magnesium Nitrate is produced from 2 moles of Nitric Acid

1 mole of Mg(NO3)2/2 moles of HNO3

5 grams of Nitric acid contains

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8 0
3 years ago
If 456 dm3 of krypton at 101kPa and 21C is compressed into a 30.1 dm3 tank at the same temperature what is the pressure of krypt
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H3PO4 (aq) + H2O (l) ⇔ H2PO4- (aq) + H3O+ (aq) Ka = 7.1 x 10-3
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\tt [H^+]=7.1.10^{-3}\dfrac{0.0065}{0.0125}\\\\(H^+]=3.692.10^{-3}\\\\pH=-log[H^+]\\\\pH=3-log3.692\\\\pH=2.433

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