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Natasha2012 [34]
4 years ago
13

2. Provide a definition for a Bronstead-Lowry Acid and a Bronstead-Lowry Base. How are these different from Arrhenius Acids and

Bases?
Chemistry
1 answer:
Vinvika [58]4 years ago
7 0

Explanation:

According to the Bronsted Lowry conjugate acid-base theory:

  • An acid is defined as a substance which donates protons and forms conjugate base.

HA\rightarrow H^++A^-

  • A base is defined as a substance which accepts protons and forms conjugate acid.

BOH+H_2O\rightarrow (BOH_2)^{+}+OH^-

According to Arrhenius concept:

  • A base is defined as a substance which donates hydroxide ions (OH^-) when dissolved in water.
  • An acid is defined as a substance which donates hydronium ions (H_3O^+) in water.
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The model below shows the equation that represents how hydrogen and oxygen combine to form water. In this chemical reaction, the
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Answer:

true

Explanation:

because they are balance

5 0
2 years ago
How many grams of carbon dioxide are in 88.5 L at STP?
34kurt

Answer:

173.8g

Explanation:

STP means standard temperature and pressure

The temperature there is 273k while the pressure is 1 atm

now we are to use the ideal gas equation to get the number of moles first

Mathematically;

PV = nRT

here P = 1 atm

V = 88.5 L

n = ?

R = molar gas constant = 0.082 L atm mol^-1 K^-1

Now rewriting the equation we can have

n = PV/RT

plugging the values we have

n = (1 * 88.5)/(0.082 * 273)

n = 88.5/22.386

n = 3.95 moles

Now we proceed to get the mass

Mathematically;

mass = no of moles * molar mass

molar mass of carbon iv oxide is 44g/mol

mass = 3.95 * 44 = 173.8 g

6 0
4 years ago
A pencil has a density of .655 g/ml. It has a mass of 3.5g. What is its volume
Leviafan [203]

Answer:

<h3>The answer is 5.34 mL</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}\\

From the question

mass = 3.5 g

density = 0.655 g/mL

We have

volume =  \frac{3.5}{0.655}  \\  = 5.343511450...

We have the final answer as

<h3>5.34 mL</h3>

Hope this helps you

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3 years ago
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Answer:

D (32.7%)

Explanation:

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Explain the 4 methods of separating mixtures
jeyben [28]
1) chromatography- separation by inner molecular attractions.

2) distillation- separation by boiling point differences.

3) filtration- separation by particle size

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3 years ago
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