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Fantom [35]
3 years ago
11

What are ionic compounds​

Chemistry
1 answer:
ASHA 777 [7]3 years ago
7 0

Answer: Ionic compounds are compounds consisting of ions.

Two-element compounds are usually ionic when one element is a metal and the other is a non-metal

Explanation: hope this helps!

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The molar mass of copper(II) chloride (CuCl2) is 134.45 g/mol. How many formula units of CuCl2 are present in 17.6 g of CuCl2?
dlinn [17]

Answer:

7

Explanation:

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Which type of reaction is the Haber process: N2(g) + 3 H2(g) → 2 NH3(g) + heat? *
Alik [6]

Answer:

exothermic, with a decrease in entropy

Explanation:

Whenever you produce heat as a product in a reaction, the reaction is exothermic. To determine entropy, we know we have 4 moles of gas on reactant (1 from N2 and 3 from H2) and in produce side we only have two moles (2 from NH3) thus since we are decreasing the number of gas molecules, there is going to be less disorder, hence decrease in entropy.

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IM ON A TIME LIMIT ANSWER FAST ILL GIVE 20 POINTS AND A BRAINEST ANSWERHow will a short-term environmental change most likely af
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4 0
3 years ago
A) Calculate the pH of a 1.8 * 10 -4 M HCl solution
Sergio [31]

Answer:-

A) 3.745

B) 2 x 10^-13 M [H+]

pOH = 1.3

Explanation:-

A) From the question we see

The strength of HCl solution = 1.8 x 10^-4 M.

The M stands for molarity which is moles / Litre.

HCl is a monobasic acid. So the number of moles of Hydrogen ion H+ HCl can give is the same as the value of it’s strength in moles per litre.

The hydrogen ion concentration [H+] is therefore 1.8 x 10^-4.

The formula for pH is

pH = - log [ H+ ]

= - log [1.8 x 10^-4]

= 3.745

B) From the question we see

The strength of KOH = 0.05 M

The M stands for molarity which is moles / Litre.

KOH is a monoacidic base. So the number of moles of Hydroxyl ion OH- KOH can give is the same as the value of it’s strength in moles per litre.

The Hydroxyl ion concentration [OH-] is therefore 0.05

The relation between [OH-] and [H+] is

[H+] x [ OH-] = 10^-14

[H+] = 10^-14 / [OH-]

= 10^-14/ 0.05

= 2 x 10^-13 M

Using the relation between pH and [OH-]

pOH = - log [OH-]

= -log [0.05]

= 1.3

7 0
3 years ago
When was the first record of a scientific method being used?
Dmitry_Shevchenko [17]

Answer:

In the mid-19th century Claude Bernard was also influential, especially in bringing the scientific method to medicine. In his discourse on scientific method, An Introduction to the Study of Experimental Medicine (1865), he described what makes a scientific theory good and what makes a scientist a true discoverer.

Explanation:

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