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Anna007 [38]
3 years ago
7

Describe, in your own words, why stirring a pitcher of lemonade will help the lemonade powder dissolve faster. Be specific in yo

ur explanation.
Chemistry
1 answer:
Leno4ka [110]3 years ago
5 0
In order for a solute to dissolve it needs to fit in between the molecules of the solvent. When you stir the mixture it makes all the molecules move around making it more likely for the solute to find one of the gaps in the solvent needed to dissolve. In the case of lemonade, sugar is the solute and water is the solvent.
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As water changes state, the water either absorbs or releases energy. Which of these
USPshnik [31]

Answer:

a, ocean water evaporating

6 0
4 years ago
what mass of Fe2O3 is produced in the reaction in the table above mass of reactants= 223.4 g Fe+96.0 g O2. and mass of products=
Ganezh [65]

Answer:

AS ACCORDING TO THE LAW OF MASS CONSERVATION

REACTANTS =PRODUCTS

THEREFORE,

223.4+96=MASS OF FE2O3

=319.4 FE203

4 0
3 years ago
Would the plastic have a positive charge, negative charge, or no charge? *
HACTEHA [7]

Answer:

Then, when students pulled the plastic through their fingers, electrons from their skin got onto the plastic. Since the plastic has more electrons than protons, it has a negative charge.

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7 0
2 years ago
A student needs to prepare a stock solution for the lab - 500.0 ml of 0.750 m nitric acid. The student is provided with concentr
dlinn [17]

Molarity of concentrated nitric acid = 15.9 M

Volume of the stock solution to be prepared = 500.0 mL

Concentration of the stock that is to be prepared = 0.750 M

Calculating moles from molarity and volume of stock:

500.0mL*\frac{1L}{1000mL}*0.750\frac{mol}{L}  =0.375 mol HNO_{3}

Calculating volume of concentrated nitric acid to be taken for the preparation of stock solution:

0.375mol*\frac{1L}{15.9mol} =0.0236 L

Converting L to mL:

0.0236L*\frac{1000mL}{1L} = 23.6 mL

Volume of distilled water to be added to 23.6 mL of 15.9 M nitric acid to get the given concentration = 5000.0mL-23.6mL=976.4 mL

Therefore, 976.4 mL distilled water is to be added to 23.6 mL of 15.9 M nitric acid solution to prepare 500.0 mL of 0.750M nitric acid.

6 0
4 years ago
What volume would 3.01•1023 molecules of oxygen gas occupy at STP?
Sliva [168]
First, find moles of oxygen gas: (3.01 x10^23 molec.)/(6.02 x10^23) =0.5mol O2


Second, multiply moles by the standard molar volume of a gas at STP:(0.5mol)(22.4L) = 11.2L O2
6 0
4 years ago
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