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IgorLugansk [536]
3 years ago
9

Which property is typical of an acid ?

Chemistry
1 answer:
LenaWriter [7]3 years ago
6 0
Properties of acids are turns blue litmus red. pH is below 7 , reacts with metals to give off hydrogen gas and they have a sour taste. So option B will be the answer. 
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What volume of O2 collected at 22.0 and 728 mmHg would be produce by the decomposition of 8.15 g KClO3?
adell [148]

Answer:

There is 2.52 L of O2 collected

Explanation:

Step 1: Data given:

Temperature = 22.0 °C

Pressure = 728 mmHg = 728 /760 = 0.958 atm

Mass of KClO3 = 8.15 grams

Molar mass of KClO3 = 122.55 g/mol

Step 2: The balanced equation

2KClO3(s) → 2KCl(s) + 3O2(g)

Step 3: Calculate moles of KClO3

Moles KClO3 = mass KClO3 / molar mass KClO3

Moles KClO3= 8.15 grams / 122.55 g/mol

Moles KClO3 = 0.0665 moles

Step 4: Calculate moles of O2

For 2 moles of KClO3 we'll have 2 moles of KCl and 3 moles of O2 produced

For 0.0665 moles of KClO3 we have 3/2 * 0.0665 = 0.09975 moles

Step 5: Calculate vlume of O2

p*V = n*R*T

V = (n*R*T)/p

⇒ with n = the number of moles O2 = 0.09975 moles

⇒ with R = the gas constant = 0.08206 L*atm/K*mol

⇒ with T = 22.0 °C = 273 +22 = 295 Kelvin

⇒ with p = 0.958 atm

V = (0.09975 * 0.08206 * 295) / 0.958

V = 2.52 L

There is 2.52 L of O2 collected

7 0
3 years ago
True or False: The atomic number is the number of neutrons in an element?
klio [65]

Answer:

true

Explanation:

5 0
3 years ago
In which substance does chlorine have an oxidation number of +1?
Anton [14]
The answer is (3) HClO. In the Cl2, chlorine has an oxidation number of zero. In HCl, the oxidation number is -1. In HClO2, the oxidation number is +3. In HClO, it is +1. You can calculate this by using O with oxidation number of -2 and H with +1.
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3 years ago
The public is not yet able to purchase cars powered by hydrogen fuel cells because engineers have to determine how the cars perf
Leya [2.2K]

Answer:

It’s B just did it

Explanation:

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3 years ago
What determines which element an atom is?
Lana71 [14]
C) number of protons.
4 0
3 years ago
Read 2 more answers
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