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2 years ago

14

Which group of elements are considered to be in the same family?

1 answer:

mash [69]2 years ago

8 0

A. helium, neon and argon, because they are in the same group or column

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To balance a half-reaction in basic solution, you need to add enough of which substances to balance the equation?

LenKa [72]

I'm not sure if this is what you're looking for, but I suppose you would have to have the solute and the solution to balance the reaction.

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3 years ago

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Who proposed the "Law of Octaves" for organizing events?

djyliett [7]

b

Explanation:

February 7, 1863, was the day John Newlands published a paper outlining what would be known as “The Law of Octaves”. Newlands discovered if he ordered the known elements by increasing atomic weight, the chemical properties of the elements would be similar for every eighth group

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2 years ago

Tells how many of each atom there are in a formula

Sveta_85 [38]

Answer:

$\large \boxed{\mathrm{subscripts}}$

Explanation:

Subscripts are numbers written after elements, subscripts indicate how many of each atom there are in a compound.

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2 years ago

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I can be formed into a sheet, I am high in luster, and am a very good conductor. I must be a ...

dimaraw [331]

Answer: metal

Explanation:

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2 years ago

What is the density of a 10 kg mass that occupies 5 liters?<br> ( pls need help)

bulgar [2K]

Answer: d=2000 g/L

Explanation:

Density is mass/volume. The units are g/L. Since we are given mass and volume, we can divide them to find density. First, we need to convert kg to g.

$10kg*\frac{1000g}{1kg} =10000 g$

Now that we have grams, we can divide to get density.

$d=\frac{10000g}{5 L}$

d=2000g/L

7 0

2 years ago