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vampirchik [111]
3 years ago
13

Explain why this statement is false: “Because there is no change in composition during a physical change, the appearance of the

substance will not change”
Chemistry
1 answer:
NARA [144]3 years ago
6 0
It is false is the awnser
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what is the molality of a 10.5% by mass glucose (C6H12O6) the density of the solution is 1.03 g/ml. i got up to m = 0.058281527
iVinArrow [24]
Solution:
<span>1 L of solution and 1.03 g/mL = 1030 g/L </span>
<span>
1030 g/L time 10.5%
= 108.15 g of glucose/L</span>
And
<span>=108.15 g / 180.16 g/mol
= 0.6003 moles in 1L </span>
<span>=or 0.600 mol/kg</span>
7 0
3 years ago
The diagram and data below represent gas and the conditions of pressure, volume, and temperature of the gas in a rigid cylinder
Sedaia [141]

Answer:

2.3 L

Explanation:

when you have this eqaution you use P1V1T2=P2V2T1.

since you are looking for volume of gas cylinder that means you are looking for V2.

so you have your given P= 1.0 atm, V=2.5L, T=298K.

They ask you to use STP or standard pressure and temperature.

STP P= 1atm, STP T=273 K

so you are looking for V2 meaning you are going to get V alone so your new equation is P1*V1*TS/ P2* T1= V2

so you now substitue so its now 1*273*2.5/ 1* 298= V

682.5/ 298= V

Lastly V= 2.2902 and you round to tenths so now you have

V= 2.3 L

5 0
3 years ago
Make a list of silver current industrial uses. Try to include the approximate annual demand if possible. Create a table to displ
r-ruslan [8.4K]

Answer:

Los usos de la plata son cientos, sobre todo en procesos industriales, comerciales y hasta personales. Su resistencia a la corrosión la hace ideal para la elaboración de recipientes especiales o para recubrir otros metales.

Explanation:

3 0
3 years ago
Read 2 more answers
Which element often shares property's
tatuchka [14]
The answer is <span>C. those with the same color</span>
7 0
4 years ago
Which of the following free-body diagrams is a balanced force?
sleet_krkn [62]

Answer:

2

Explanation:

#1 is incorrect as there is no upward force that would balance the 5 N downward force

#3 is incorrect 2 is less than 5 = net force downward of 3 N

#4 is incorrect 5 is greater than three = 2 N net force going to the left and 2N going up

4 0
3 years ago
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