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AleksAgata [21]
3 years ago
13

HELP ASAP!!

Chemistry
2 answers:
Ksju [112]3 years ago
4 0
109/8.56=12.7
50+12.7
V=62.7

Mass= Volume x Density so i divided the mass and density to get the volume. and afterwards i would just add it to the mass to get my final answer

r-ruslan [8.4K]3 years ago
3 0

Answer:

The final volume reading in the graduated cylinder 62.7 ml.

Explanation:

Initial level of the water in graduated cylinder = 50 .0 ml

To calculate volume of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

We are given:

Density of liquid = 8.56 g/mL

Mass of substance = 109 g

Putting values in above equation, we get:

8.56 g/mL=\frac{109 g}{\text{Volume of substance}}\\\\\text{Volume of substance}=12.7 mL

Volume occupied by the substance = 12.7 mL

Volume occupied by the substance will increase the volume of the water more by 12.7 ml.

The final volume reading in the graduated cylinder :

50 ml + 12.7 mL = 62.7 mL

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Alinara [238K]

Answer:

Ppm <u>means the concentration of vapors or gases</u> expressed in parts per million of polluted air.

Explanation:

In Chemistry and Physics, part per million or PPM is a measure that expresses the number of units of a certain existing substance for every million units of the mixture. (Concentration)

In climate the equation is used so:

  • ppm = parts of polluted air / million parts of air .
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This is used to find the concentration of gases expressed as parts of gas per million parts of the

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In this case, it would be<u> 407.4L of CO2 per 10∧6L of air.</u>

6 0
3 years ago
A 25-liter sample of steam at 100°c and 1.0 atm is cooled to 25°c and expanded until the pressure is 19.71 mmhg. if no water con
qwelly [4]
I will use [pV/T] in the state 1 = [pV/T] in the state 2.

State 1:
p = 1.0 atm
V = 25 liter
T = 100 + 273.15 = 373.15 K

State 2:

p = 19.71 mmHg * 1.atm / 760 mmHg = 0.0259atm
V= ?
T = 25 + 273.15 = 298.15 K

Application of the formula

1.0 atm * 25 liter / 373.15 k = 0.0259 atm * V / 298.15 K =>
V = [1.0atm * 25 liter / 373.15 K]*298.15K/0.0259atm = 771 liter

 
8 0
3 years ago
Read 2 more answers
Ok this is so weird but like how do you expose fake friends for talking about you? I know they did it but i dont know how to tal
murzikaleks [220]

Answer:

just do it

Explanation:

8 0
3 years ago
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In the force equation, which two variables have a direct relationship? Which two have an indirect/inverse relationship?
zhuklara [117]

Answer:

if the dependent and independent variable go up its direct but if one of them goes up and another goes down its indirect

Explanation:

for example the more mass an object has the less speed it has that's indirect but the less salt you add to water the less time you have to wait for it to boil

i hope this was useful

4 0
3 years ago
Question 4 Unsaved When writing electron configuration the 3d block comes after the 4s block. Question 4 options: True False
zmey [24]

Answer:

True

Explanation:

According to Aufbau's principle "sublevels with lower energies are filled up before those with higher energies".

Sublevels do not fill up in numerical order but there is a certain manner in which they are filled. The pattern is shown below:

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6 0
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