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lorasvet [3.4K]
3 years ago
13

2) If the density of chloroform is 1.48 g/mL, what is the volume of 541 g of chloroform?

Chemistry
1 answer:
Maurinko [17]3 years ago
5 0

Answer:

V = 365.54 mL

Explanation:

Given that,

The density of chloroform, d = 1.48 g/mL

The mass of chloroform, m = 541 g

We need to find the volume of chloroform.

We know that,

Density = mass/volume

So,

V=\dfrac{m}{d}\\\\V=\dfrac{541\ g}{1.48\ g/mL}\\\\=365.54\ mL

So, the volume of chloroform is 365.54 mL.

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timofeeve [1]

Answer:

Answer:

step 1:balance skeleton equation the chemical equation:

Zn +HNO3➔Zn(NO3)2+NO+H2O

step 2: identity undergoing oxidation or reduction

here

Zn➔Zn(NO3)2

Zn is oxidized from 0 to 2 in oxidation no.

HNO3➔NO

N is reduced from 5 to 2 in oxidation no

Step 3: calculate change in oxidation no.

change in oxidation no

in Zn=0-2=-2=2

in

N=5-2=3

Step 4: Balance it by doing crisscrossed multiplication

we get;

3Zn +2HNO3➔3Zn(NO3)2+2NO+H2O

step 6:Balance other atoms except H & O

3Zn +2HNO3➔3Zn(NO3)2+2NO+H2O

3Zn +2HNO3+6HNO3➔3Zn(NO3)2+2NO+H2O

finally: balance H

<em><u>3Zn +8HNO3➔3Zn(NO3)2+2NO+4H2O</u></em>

3 0
3 years ago
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Choose the correct total number of electron domains (bonding and nonbonding) about a central atom if the angle(s) between the el
slamgirl [31]

Answer:

The central atom has 3 electron domains.

Explanation:

According to the Valence Shell electron pair repulsion theory (VSEPR) put forward by Gillespie and Nyholm in 1957, the shape of a molecule is determined by repulsion between all the electron pairs (electron domains) present in the valence shell.

The electron pairs or electron domains are known to position themselves as far apart in space as possible in order to minimize repulsions.

Hence, when the central atom of a molecule contains three electron domains, they are positioned at an angle of 120° from each other to minimize repulsions. Hence the answer.

5 0
4 years ago
Which statement best describes the total number of carbon atoms during cellular
Arisa [49]

Answer:

statement best describes the total number of carbon atoms during cellular

respiration in the fish is :

The total number of carbon atoms stays the same because the carbon from the carbon-containing food molecules is used to make molecules such as  carbon dioxide

Explanation:

Respiration : It is a process in which energy from the "food" molecule is released in the form of ATP

ATP = Adenosine Triphosphate

There are two kind of respiration process:

1. In the presence of O2 = Aerobic  Oxidation

2. In the absence of O2 = Anaerobic Oxidation

The breakdown of food into CO2 occur by three main process:

Glycolysis

Krebs cycle

Phosphorylation

The reaction for the Decomposition of the Glucose molecule is written as:

C_{6}H_{12}O_{6}+O_{2}\rightarrow 6CO_{2}+6H_{2}O+ATP

It is a oxidation - reduction reaction(Redox).

Here one substance is oxidised and other is reduced.

The number of Carbon atoms in reactant =6

It will produce = 6 CO2 in which the number of C=6

Hence ,

The total number of carbon atoms stays the same because the carbon from the carbon-containing food molecules is used to make molecules such as  carbon dioxide

4 0
3 years ago
0.450 moles of NaCl are dissolved in 95.0 mL of water. Calculate the molarity of the NaCl solution.
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Answer:

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Explanation:

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The Periodic Table of Elements is organized by the number of:
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Answer:

c) protons

Explanation:

7 0
3 years ago
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