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Agata [3.3K]
3 years ago
5

Balance the following equations:

Chemistry
1 answer:
GuDViN [60]3 years ago
8 0

<em><u>ANSWERS</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em>

<em>1</em><em>)</em>

\red{2}Na + Br2 → \red{2}NaBr

<em>2</em><em>)</em>

\blue{2}C4H6 + \blue{11}O2 → \blue{8}CO2 + \blue{6}H2O

<em>3</em><em>)</em>

<em>H3PO4 + \green{3}LiOH → \green{3}H2O + Li3PO4</em>

<em>4</em><em>)</em>

<em>Ca(NO3)2 + K2SO4 → CaSO4 + \pink{2}KNO3</em>

<em>5</em><em>)</em>

<em>\orange{2}H2O2→\orange{2}H2O+O2</em>

<em>(</em><em>mark</em><em> </em><em>me</em><em> </em><em>brainliest</em><em> </em><em>please</em><em> </em><em>I</em><em> </em><em>need</em><em> </em><em>3</em><em> </em><em>more</em><em> </em><em>:</em><em>)</em><em>)</em>

<em>\large\sf\red{thank \: you}</em>

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Plz help plz help plz help meed
Leviafan [203]

Answer:

5106.38 Ω

Explanation:

From the question given above, the following data were obtained:

Current (I) = 0.0235 A

Voltage (V) = 120 V

Resistor (R) =?

From ohm's law,

V = IR

Where:

V => is the voltage.

I => is the current

R => is the resistor

With the above formula, we can obtain the size of the resistor needed as follow:

Current (I) = 0.0235 A

Voltage (V) = 120 V

Resistor (R) =?

V = IR

120 = 0.0235 × R

Divide both side by 0.0235

R = 120 / 0.0235

R = 5106.38 Ω

Thus, the size of the resistor needed is 5106.38 Ω

3 0
3 years ago
What is the charge on an atom after it gains an electron during the formation of a bond? (5 points)
nalin [4]

Answer:

the answer is one negative charge

3 0
3 years ago
Read 2 more answers
Which of the following atoms forms an ionic bond with a sulfur atom?
Luda [366]
Well, depending on the charge, it could be Cu; if it has a charge of 2+
5 0
3 years ago
Mg(OH)2 + 2 HBr à MgBr2 + 2 H2O
AnnyKZ [126]

Explanation:

The balanced equation of the reaction is given as;

Mg(OH)2 (s) + 2 HBr (aq) → MgBr2 (aq) + 2 H2O (l)

1. How many grams of MgBr2 will be produced from 18.3 grams of HBr?

From the reaction;

2 mol of HBr produces 1 mol of  MgBr2

Converting to masses using;

Mass = Number of moles * Molar mass

Molar mass of HBr = 80.91 g/mol

Molar mass of MgBr2 = 184.113 g/mol

This means;

(2 * 80.91 = 161.82g) of HBr produces (1 * 184.113 = 184.113g) MgBr2

18.3g would produce x

161.82 = 184.113

18.3 = x

x = (184.113 * 18.3 ) / 161.82 = 20.8 g

2. How many moles of H2O will be produced from 18.3 grams of HBr?

Converting the mass to mol;

Number of moles = Mass / Molar mass = 18.3 / 80.91 = 0.226 mol

From the reaction;

2 mol of HBr produces 2 mol of H2O

0.226 mol would produce x

2 =2

0.226 = x

x = 0.226 * 2 / 2 = 0.226 mol

3. How many grams of Mg(OH)2 are needed to completely react with 18.3 grams of HBr?

From the reaction;

2 mol of HBr reacts with 1 mol of Mg(OH)2

18.3g of HBr =  0.226 mol

2 = 1

0.226 = x

x = 0.226 * 1 /2

x = 0.113 mol

5 0
3 years ago
57.A cofactor is a(an)
Rudik [331]

A cofactor is an organic or inorganic molecule or ion necessary for proper functioning of some biological catalysts (option E).

<h3>What is a cofactor?</h3>

A cofactor in biochemistry is a molecule that binds to and regulates the activity of a protein.

A cofactor is a metal or coenzyme responsible for the functioning of an enzyme and must be present.

Therefore, a cofactor is an organic or inorganic molecule or ion necessary for proper functioning of some biological catalysts.

Learn more about cofactors at: brainly.com/question/13004767

#SPJ1

3 0
2 years ago
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