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joja [24]
3 years ago
9

Water samples containing dissolved substances are called _____ solutions. A. solvent B. aqueous C. anhydrous D. elementary

Chemistry
1 answer:
dlinn [17]3 years ago
7 0
The answer is B. hopes it help  you.!!
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How many grams of CH4 will be in a 500ml contain at STP?
ArbitrLikvidat [17]

Answer:

Mass = 0.32 g

Explanation:

Given data:

Mass of CH₄ = ?

Volume of CH₄ = 500 mL (500 mL× 1L/1000 mL= 0.5 L)

Temperature = 273 K

Pressure = 1 atm

Solution:

Volume of CH₄:

500 mL (500 mL× 1L/1000 mL= 0.5 L)

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

By putting values,

1 atm× 0.5 L = n×0.0821 atm.L/ mol.K  × 273 K

0.5 atm.L = n×22.4 atm.L/ mol

n = 0.5 atm.L / 22.4 atm.L/ mol

n = 0.02 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 0.02 mol × 16 g/mol

Mass = 0.32 g

7 0
3 years ago
How many significant digits are in 5.100 x 103?
photoshop1234 [79]
5100.0 has 5 but a 5.100 x 10 cubed(3) has only 4
4 0
4 years ago
Explain Boyle's pressure-volume relationship in terms of the kinetic-<br>molecular theory.<br>.​
TiliK225 [7]

Answer:

<em>The pressure and the volume are inversely related in Boyle's Law. In Kinetic theory pressure is created by the collision of particles. If the volume is greater the number of collisions and pressure will be less. So volume and pressure are inversely related if the temperature and total kinetic energy is kept constant.</em>

Explanation:

hope to help you

7 0
3 years ago
Read 2 more answers
A chemistry student weighs out of acetic acid into a volumetric flask and dilutes to the mark with distilled water. He plans to
xeze [42]

Answer:

Your question is not complete, but use this answer as a guide for your solution.

Question: A chemistry student weighs out 0.112g of acetic acid (HCH₃CO₂) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1600 <em>M</em> NaOH solution. Calculate the volume of solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits.

Answer: Volume of NaOH is 11.6 mL

Explanation:

The reaction of acetic acid with NaOH is as follows:

CH3COOH + NaOH -----> CH3COONa + H2O

M1V1 = M2V2

Here M1 V1 are molarity and volume of acetic acid.

M2, V2 are molarity and volume of NaOH.

Number of moles of acetic acid:

0.112 g CH3COOH × (1 mol / 60.05 g) = 0.001865 mol

Molarity = moles of solute / Liters of solution

Molarity = 0.001865 mol / 0.250 L = 0.00746 M

Hence,

M1 = 0.00746 M

V1 = 250 mL

M2 = 0.160 M

V2 = ?

V2 = M1V1 / M2

V2 = 0.00746 M × 250 mL / 0.160 M

V2 = 11.6 mL

Hence the volume of NaOH is 11.6 mL

4 0
3 years ago
What are the steps followed in corroding iron​
Lady bird [3.3K]

Answer: Electrochemical oxidation of metal in reaction with an oxidant such as oxygen or sulfates is the step of corroding iron...(sorry if it is wrong)

4 0
3 years ago
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