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jenyasd209 [6]
3 years ago
11

What is deposition ?

Chemistry
2 answers:
Angelina_Jolie [31]3 years ago
8 0

Answer:

the act of deposing someone especially a monarch

slavikrds [6]3 years ago
7 0

The act of depositing material, especially by a natural process; the resultant deposit.

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A weight of 0.27 kilogram is<br> 1. 0.00027 mg<br> 2. 270 mg<br> 3. 27 mg<br> 4. 2.7 × 105 mg
julia-pushkina [17]
The answer is:  4)  " 2.7 * 10⁵  mg "   .
________________________________________________________
Explanation:
________________________________________________________
Since all answer choices given are in "mg" ("milligrams");  we need to convert our given value, "0.27 kg" ("kilograms") to "mg" ("milligrams").
________________________________________________________
Note the following "exact value" conversions:
________________________________________________________
 1000 mg = 1 g ;
   1000 g = 1 kg. 

(0.27 kg) (1000 g / 1 kg) (1000 mg/1 g) = __?__ mg ;
_____________________________________________________
 The units of "kg", and "g" cancel to "1" and we are left with:
________________________________________________
0.27 * 1000 * 1000  mg  = 270,000 mg =  2.7 * 10<span>⁵ </span> mg ; which is:
_______________________________________________________
                                                               → Answer choice: # 4  .
_______________________________________________________
8 0
3 years ago
Why would a table be more suitable than a graph to show data
kow [346]
It might be more suitable because some data cannot use a graph to show data because there is too much data.
6 0
3 years ago
Calculate the vapor pressure of water above a solution prepared by dissolving 28.5 g of glycerin (c3h8o3) in 135 g of water at 3
pshichka [43]
Data:

<span>Solute: 28.5 g of glycerin (C3H8O3)
Solvent: 135 g of water at 343 k.
Vapor pressure of water at 343 k: 233.7 torr.

Quesiton: Vapor pressure of water

Solution:

Raoult's Law: </span><span><span>The vapour pressure of a solution of a non-volatile solute is equal to the vapour pressure of the pure solvent at that temperature  multiplied by its mole fraction.

Formula: p = Xsolvent * P pure solvent

X solvent = moles solvent / moles of solution

molar mass of H2O = 2*1.0g/mol + 16.0 g/mol = 18.0 g/mol

moles of solvent = 135 g of water / 18.0 g/mol = 7.50 mol

molar mass of C3H8O3 = 3*12.0 g/mol + 8*1 g/mol + 3*16g/mol = 92 g/mol

moles of solute = 28.5 g / 92.0 g/mol = 0.310 mol

moles of solution = moles of solute + moles of solvent = 7.50mol + 0.310mol = 7.810 mol

Xsolvent = 7.50mol / 7.81mol = 0.960

p = 233.7 torr * 0.960 = 224.4 torr

Answer: 224.4 torr
</span> </span>
8 0
3 years ago
A 0.100 mile sample of gas is at a temperature of 85.0 degrees C and a volume of 3.47 L. What is the pressure of the gas( in mm
vladimir1956 [14]

Answer: 64.6 mmHg

Explanation:

Given that:

Volume of gas V = 3.47L

(since 1 liter = 1dm3

3.47L = 3.47dm3)

Temperature T = 85.0°C

Convert Celsius to Kelvin

(85.0°C + 273 = 358K)

Pressure P = ?

Number of moles of gas N = 0.100 mole

Note that Molar gas constant R is a constant with a value of 0.0082 ATM dm3 K-1 mol-1

Then, apply ideal gas equation

pV = nRT

p x 3.47dm3 = 0.10 x (0.0082 atm dm3 K-1 mol-1 x 358K)

p x 3.47dm3 = 0.29 atm dm3

p = (0.29 atm dm3 / 3.47 dm3)

p = 0.085 atm

Recall that pressure of the gas is required in mm hg, so convert 0.085 atm to mm Hg

If 1 atm = 760 mm Hg

0.085atm = 0.085 x 760

= 64.6 mm Hg

Thus, the pressure of the gas is 64.6 mm hg

6 0
3 years ago
Which of the following is a negatively charged particle?
kirza4 [7]

Answer:

B. electron

Explanation:

B. electron

electron is a negatively charged particle

proton is a positively charged particle

7 0
3 years ago
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