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professor190 [17]
3 years ago
14

How an ionic compound made up of charged particles can be electrically neutral

Chemistry
1 answer:
finlep [7]3 years ago
5 0

Answer:

Explanation:

Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.

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After each half-life cycle, of the radioactive nuclei became nonradioactive.
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What mass of carbon monooxide must be burned to produce 175 kJ of heat under standard state condaitions?
Sphinxa [80]

Answer:

17.3124 grams

Explanation:

Given;

Amount of heat to be produced = 175 kJ

Molar mass of the carbon monoxide = 12 + 16 = 28 grams

Now,

The standard molar enthalpy of carbon monoxide = 283 kJ/mol

Thus,

To produce 175 kJ heat, number of moles of CO required will be

= Amount heat to be produced /  standard molar enthalpy of CO

or

= 175 / 283

= 0.6183

Also,

number of moles = Mass / Molar mass

therefore,

0.6183 = Mass / 28

or

Mass of the CO required = 0.6183 × 28 = 17.3124 grams

7 0
3 years ago
How many moles are in 558 grams of Hydrofluoric acid? please show dimensional analysis
kobusy [5.1K]

Answer:

29.4mol

Explanation:

Using mole = mass ÷ molar mass

Molar mass of HF (hydrogen fluoride) = 1 + 19 = 20g/lol

Using the formula;

Mole = mass/molar mass

Mole = 588/20

Mole = 29.4mol

5 0
3 years ago
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