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KengaRu [80]
3 years ago
11

Which of the following is the atomic number of an alkali metal?​

Chemistry
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

what are the options??

Explanation:

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What two types of elements are ionic compounds made of?
mash [69]

Answer:

ionic compounds are made from metal and non mental elements

Explanation:

in this case it is know as an ionic compound because it contains a charge. For example, NaCl is simply a compound as it contains no charges (the charges cancel out as Cl is -1 and Na is +1)

but OH- is an ionic compound as it has a charge if -1 (O has a -2 charge and H has a +1 charge, so -2+1=-1 so OH has -1 charge)

8 0
3 years ago
1. How many ATOMS of carbon are present in 7.48 grams of carbon monoxide ?
Salsk061 [2.6K]

Answer:

The answer is 1.61 × 10²³ atoms

Explanation:

To determine number of atoms, we will use the formula below

Number of atoms = number of moles (n) × avogadro's constant (6.02 x 10²³)

n was not provided, hence we will solve for n

n = mass/ molar mass

molar mass of carbon monoxide, CO (where C is 12 and O is 16) is 12 + 16 = 28

mass was provided in the question as 7.48

n = 7.48/28

n = 0.267

Hence,

number of atoms = 0.267 × 6.02 x 10²³

= 1.61 × 10²³ atoms

3 0
3 years ago
Which of the following properties can be
Aleonysh [2.5K]

Answer:

Ability to conduct electricity

Melting point

4 0
3 years ago
Which force saves the atom by emitting particles from the nucleus
mash [69]

Answer:

nuclear force

Explanation:

3 0
3 years ago
Find q when 22.0g of water is heated from 25.0 C to 100 C. The specific heat capacity is water is 4.184 J/g.K
Leokris [45]

Answer:27,430J/g.K

Explanation:q= mass* specific heat capacity * change in temperature (kelvin)

22*4.184*[(100-25) + 273]

22*4.184*298

27,430J/g.K

3 0
3 years ago
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