Hi can someone please help me!

Chemistry

1 answer:

Ratling [72]2 years ago

7 0

Answer:

a) 2

b) 2

c) 5

d) 5

e) 5

Explanation:

a) There is 1 Ag atom and 1 Cl atom. <em>When there's no subscript number next to an element, it means there is only one.</em>

b) There is 1 Ca atom and 1 O atom.

c) There are 3 Mg atoms (there's a subscript 3 next to Mg) and 2 N atoms.

d) There are 2 Al atoms and 3 O atoms.

e) There are 2 Sc atoms and 3 S atoms.

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True or false? Covalent molecules are formed when non-metal atoms share electrons with other non-metal atoms.

Tomtit [17]

Answer:

true

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3 years ago

If f is a reactive nonmetal, which other element or elements shown here do you expect to also be a reactive nonmetal?

vichka [17]

You did not include the list but F is fluorine. The first halogen.

So, you can expect that the other members of the same group (halogens, column 17 of the periodic table) exhibit similar chemical behavior (reactivity).

So, I am sure your list contains one or more of theses elements: Cl (chlorine), Br (bromine), and I (iodine).

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3 years ago

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aleksklad [387]

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Solution : Given,

Mass of copper ore = 1 Kg = 1000 g

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