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3 years ago

What is the density of a liquid that has a mass of 27g and a volume of 30mL?

Chemistry

1 answer:

NNADVOKAT [17]3 years ago

8 0

Answer: 7 g/cm to the third power
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Iodine is a solid nonmetal. What is one property of iodine?

KiRa [710]

Answer:

The correct answer is B. Dull appearance

Explanation:

6 0

3 years ago

Air is made up mostly of O2, N2, and CO2. If the total pressure of air is 765mmHg and P(N2) = 0.79 atm and P(CO2) = 0.05 atm, th

Mrac [35]

Answer:

the partial pressure of the O2 is 0.167 atm

Explanation:

The computation of the partial pressure of the O2 is shown below:

As we know that

P = P_N2 + P_O2 + P_CO2

P_O2 = P - P_N2 - P_CO2

= (1.007 - 0.79 - 0.05)

= 0.167 atm

Hence, the partial pressure of the O2 is 0.167 atm

we simply applied the above formula

5 0

3 years ago

Cora, an electrician, wraps a copper wire with a thick plastic coating. What is she most likely trying to do? keep the electric

Alekssandra [29.7K]

Answer: keep a current from passing out of the wire

Explanation: plastic is an insulator and will not conduct electricity

3 0

4 years ago

Read 2 more answers

What’s six physical properties going on in this photo? And two chemical properties

Alexandra [31]

Answer:

Physical Properties:

The grass is green.
The wood on the house is brown.
The house is solid.
The stone on the house is dark grey.
The trees are green.
The glass in the windows is clear and colourless.

Chemical Properties:

The wood is flammable.
The stone is not flammable.

Explanation:

Physical properties are properties that don't require a chemical reaction to be measured, for example the colour. Chemical properties are properties that are observed when a substance undergoes a chemical reaction, for example flammability.

3 0

3 years ago

In the following reaction, Zn is Zn(s) H2SO4(aq) --> ZnSO4(aq) H2(g) A.Reduced B.Oxidized C.This is not a redox reaction D.An

Svetlanka [38]

Answer: The correct option is B) oxidized

Explanation:

Redox reaction is defined as the reaction in which oxidation and reduction take place simultaneously.

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when the oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when the oxidation number of a species decreases.

For the given chemical reaction:

$Zn+H_2SO_4+S\rightarrow ZnSO_4+H_2$

On the reactant side:

Oxidation number of H = +1

Oxidation number of Zn = 0

Oxidation number of S = +6

Oxidation number of O = -2

On the product side:

Oxidation number of H = 0

Oxidation number of Zn = +2

Oxidation number of S = +6

Oxidation number of O = -2

As the oxidation number of Zn is increasing from 0 to +2. Thus, it is getting oxidized. Similarly, the oxidation number of H is decreasing from +1 to 0. Thus, it is getting reduced.

Hence, the correct option is B) oxidized

4 0

3 years ago