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koban [17]
3 years ago
15

One acid-base theory states that an acid is

Chemistry
1 answer:
grigory [225]3 years ago
8 0
One acide-base theory states that an acid is an H+ Donor.
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How can we remove the hardness of water by boiling?​
pantera1 [17]

Heat makes it softer

5 0
3 years ago
Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person or animal that ingests it.
Artemon [7]

Answer:

88,7 mL of solution

Explanation:

Molarity (Represented as M) is an unit of chemical concentration that is defined as the ratio between moles of solute per liters of solution, that is:

Molarity = moles of solute / Liters of solution

If molarity of KCN solution is 0,0820M and moles of KCN are 7,27x10⁻³ moles:

0,0820M = 7,27x10⁻³ moles / Liters of solution

Liters of solution = 0,0887L = <em>88,7 mL of solution</em>

I hope it helps!

4 0
3 years ago
Boyle's Law represents the relationship of volume as pressure changes. The constants of Boyle's Law are:
Aleksandr [31]

Answer:

d. Temperature and number of molecules of gas  

Step-by-step explanation:

Boyle's Law states, "The volume of a fixed mass of a gas is inversely proportional to the pressure if the temperature remains constant."

Let's examine the words.

"… volume…is inversely proportional to the pressure …" This means that volume and pressure are the <em>variables</em>.

"… fixed mass of a gas …" means that the number of molecules is constant.

"… temperature remains constant" speaks for itself.

a, c, and e are <em>wrong</em>, because pressure is a variable.

b is <em>wrong</em>, because volume is a variable.

5 0
3 years ago
What is the oxidation number of C in NaHCO3?
Phoenix [80]
Na = +1
H = +1
O = -2
Total charge is 0:
1 + 1 + C + 3 x -2 = 0
C = 4
4 0
3 years ago
IMFs are NOT found in what type of<br> substances?
ExtremeBDS [4]

Answer:

False

Explanation:

8 0
3 years ago
Read 2 more answers
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