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3 years ago

The reactant side of a balanced chemical equation is shown below.

Chemistry

2 answers:

Sloan [31]3 years ago

6 0

Answer:

Explanation:

In the equation, Cl is chlorine and there is a number "2" so that the correct answer is 2.

astraxan [27]3 years ago

3 0

Answer:

two

Explanation:

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Difference between molar mass and molecular mass?

Elden [556K]

Answer:

In chemistry the substance is usually measured using molecular mass and molar mass. They are very important concepts in chemistry. Expression of molar mass is grams per mole.

...

Molar mass:

Difference between Molar mass and Molecular mass

Measurement given to compounds, atoms or molecules Determined only in molecules

Explanation:

hope the answer was helpful

8 0

3 years ago

A flask containing 5.98mL of a liquid weighs 163.4 g with the liquid in the flask and 154.9 when empty. Calculate the density of

melomori [17]

Answer:

1.42 g/mL

Explanation:

The mass per unit volume is called as density. It is an intensive property and its value doesn't depend upon the amount of a substance.

It is given as,

Density = Mass / Volume

Data Given:

Mass of Liquid + Flask = 163.4 g

Volume of Liquid = 5.98 mL

Mass of empty Flask = 154.9 g

Mass of Liquid = 163.4 g - 154.9 g = 8.5 g

Formula Used:

Density = Mass / Volume

Density = 8.5 g / 5.98 mL

Density = 1.42 g/mL

8 0

3 years ago

How many grams of KCl (s) has been produced from the thermal decomposition of KClO3 (s) that produced 50.0 mL of O2 (g) at 25 de

geniusboy [140]

Answer:

The mass is $m_{KCl} = 0.102 \ g$

Explanation:

From the question we are told that

The volume of oxygen produced is $V_o = 50mL = 50 *10^{-3} L$

The temperature is $T = 25 ^oC = 25* 273 = 298 K$

The pressure is $P = 1.0\ atm$

From the ideal gas law we have that

$PV = nRT$

Where R is the gas constant with the value

$R = 0.08206 \ atm \cdot L /mol K$

n is the number of moles making it the subject of the formula

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

Substituting values

$n = \frac{1 * (50 *10^{-3}) }{0.08206 * 298}$

$n = 2.045 *10^{-3} \ mol$

From the chemical equation

one mole of $KClO_3$ produces one mole of kCl and $\frac{3}{2}$ of oxygen

x mole of $KClO_3$ produces x mole of kCl and $2.045 *10^{-3} \ mol$ of oxygen

So $x = \frac{2.045 *10^{-3}}{\frac{3}{2} }$

$x = \frac{2}{3} * 2.045 *10^{-3}$

$x = 1.363 *10^{-3} \ mol$

Now the molar mass of KCl is a constant with a value

$M_{KCl} = 74.55 g/mol$

Now the mass of KCl is mathematically evaluated as

$m_{KCl} = x * M_{KCl}$

Substituting values

$m_{KCl} = 1.363 *10^{-3} * 74.55$

$m_{KCl} = 0.102 \ g$

6 0

3 years ago

What is the difference between an electrolyte and a non-electrolyte? (Provide examples.)

Mars2501 [29]

<h3>Answer:</h3>

Electrolytes: NaBr, H3PO4, NaOH and NH3

Non-electrolyte: C6H12O6

<h3>Explanation:</h3>

An electrolyte is a good conductor of electric current while non electrolyte are poor conductors of electric current.
Electrolytes conduct while in aqueous or molten form and can be decomposed by passing electric current through them.
Electrolytes conduct electric current due to the presence of mobile ions.
Non-electrolytes do not ionize while in aqueous form and thus do not conduct electric current.
Examples of electrolytes in this case are, NaBr, H3PO4, NaOH and NH3
Examples of Non-electrolytes in this case are C6H12O6

6 0

3 years ago

Read 2 more answers

How to obtain pure aluminium oxide from sodium aluminate. pls help.

cupoosta [38]

Answer:

<em>By</em><em> </em><em>Bayer</em><em> </em><em>process</em><em>.</em>

Explanation:

<em>In the Bayer process, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution (caustic soda) at a temperature of 150 to 200 °C. At these temperatures, the aluminium is dissolved as sodium aluminate (primarily [Al(OH)4]−) in an extraction process.</em>

6 0

3 years ago