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mojhsa [17]
2 years ago
9

Why are ionic compounds good conductors of electricity.

Chemistry
1 answer:
abruzzese [7]2 years ago
3 0

Answer:

because their ions are free to move from place to place.

Explanation: see answer

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You want to determine the molar
natima [27]

Answer:

I just guessed it out to be 3

3 0
1 year ago
The balanced chemical equation below represents the formation of magnesium chloride.
Novay_Z [31]

Answer:

C. 33.6L

Explanation:

Based on the reaction, 2 moles of HCl reacts producing 1 mole of hydrogen.

To solve this question we must find the moles of hydrogen produced using the reaction. Then, with combined gas law (PV = nRT) we can find the volume produced:

<em>Moles H2:</em>

3.00 moles HCl * (1mol H2 / 2mol HCl) = 1.50 moles H2 are produced

<em>Volume:</em>

PV = nRT

V = nRT / P

<em>Where P is pressure = 1atm at STP</em>

<em>V is volume = Our incognite</em>

<em>n are moles of the gas = 1.50 moles</em>

<em>R is gas constant = 0.082atmL/molK</em>

<em>T is absolute temperature = 273.15K</em>

<em />

V = nRT / P

V = 1.50mol*0.082atmL/molK*273.15K / 1atm

V = 33.6L

<h3>C. 33.6L</h3>
7 0
3 years ago
How many molecules are in 7 g of H2O
Luda [366]

Answer:

0.38

Explanation:its right bc it is

5 0
2 years ago
Read 2 more answers
Carbon-14 is a radioactive isotope. It is found in the air in carbon dioxide molecules. The amount of carbon-14 in the air has s
STatiana [176]

Answer: A. About 5,700 years

Explanation:

Expression for rate law for first order kinetics is given by

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate or decay constant  

t = age of sample

a = let initial amount of the reactant  

a - x = amount left after decay process  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

Thus the time taken to carbon-14 to reduce to 50% is called as half life.

From the graph, it comes out to be 5750 years which is close to 5700 years

8 0
3 years ago
Suppose now that you wanted to determine the density of a small crystal to confirm that it is boron. From the literature, you kn
Phantasy [73]

Answer:

the volume of  CHCI3 = 7.87 ml

the volume of  CHBr3 = 12.13 ml

Explanation:

From the given information:

We all know that 1 g/cm^3 = 1 g/ml

The density of boron = 2.34 g/ml

The Volume of the liquid mixture  = 20 ml

Recall that:

Density = mass/volume

Mass = Density × Volume

Mass = 2.34 g/ml × 20 ml

Mass = 46.8 g

Suppose the volume of  CHCI3 be Y and the Volume of CHBr3 be 20 - Y

Then :

Y (1.492) + 20-Y(2.890) = 46.8

1.492Y + 57.8 - 2.890Y = 46.8

- 1.398 Y = -11

Y = -11/ - 1.398

Y = 7.87 ml

Therefore, the volume of CHCI3  7.87 ml

the volume of  CHBr3 = 20 - Y

= 20 - 7.87

= 12.13 ml

3 0
3 years ago
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