3 years ago

Which of these properties can be used to separate mixtures? - characteristic properties *

Chemistry

2 answers:

GarryVolchara [31]3 years ago

8 0

Answer:

Boiling/melting point

Explanation:

Some elements can’t handle the heat nor the cold, so they separate like oil & water.

timama [110]3 years ago

3 0

The answer is boiling/melting point

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stiv31 [10]

Answer:

13. D Hypothesis 14. A Analyze Matter, Solve Problems

Explanation:

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3 years ago

Divergent plate boundary is when two plates come together True or false

Ivahew [28]

False, divergent boundaries are when two plates move away from each other.

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3 years ago

Find the heat produced from an 8.00 L cylinder of propane gas under 5.00 atm at 25.0 oC, if one mole of propane can produce 2220

Andrei [34K]

Answer: 3597 kJ of heat

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 5.00 atm

V = Volume of gas = 8.00 L

n = number of moles = ?

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $25.0^0C=(25.0+273)K=298K$

$n=\frac{PV}{RT}$

$n=\frac{5.00atm\times 8.00L}{0.0821 L atm/K mol\times 298K}=1.63moles$

As it is given :

1 mole of propane produces = 2220 kJ of heat

Thus 1.63 moles of propane produces = $\frac{2200}{1}\times 1.63=3597kJ$

Thus 3597 kJ of heat is produced

4 0

3 years ago

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A triglyceride is a common type of lipid which contains?

nata0808 [166]

Ooooh, triglycerides contain glycerol and three fatty acids

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3 years ago

Suppose you are titrating vinegar, which is an acetic acid solution of unknown strength, with a sodium hydroxide solution accord

OleMash [197]

Answer:

0.0626 M

Explanation:

Equation of the reaction

CH3COOH(aq) + NaOH(aq) ---------> CH3COONa(aq) + H2O

Concentration of acid CA= ???

Concentration of base CB= 0.1943 M

Volume of acid VA= 10.0ml

Volume of base VB= 32.22 ml

Number of moles of acid NA= 1

Number of moles of base NB= 1

From

CA= CB VB NA/VA NB

Hence ;

CA= 0.1943 M × 32.22 ml × 1/10.0ml ×1

CA= 0.0626 M

3 0

4 years ago