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iren2701 [21]
2 years ago
6

What tiles should I put in the box?

Chemistry
1 answer:
Gennadij [26K]2 years ago
4 0

Answer:

true&answe

Explanation:

You might be interested in
1. How many molecules are in 240g of sulfuric acid?
Soloha48 [4]

Answer:

14.8 × 10²³ molecules

Explanation:

Given data:

Mass of sulfuric acid = 240 g

Number of molecules = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Number of moles of sulfuric acid

<em>Number of moles = mass/ molar mass</em>

Number of moles =  240 g/ 98 g/mol

Number of moles = 2.45 mol

Number of molecules:

1 mole = 6.022 × 10²³ molecules

2.45 × 6.022 × 10²³ molecules

14.8 × 10²³ molecules

3 0
3 years ago
Give the conjugate acid for each compound below. co3^2-
DENIUS [597]
A conjugate acid is a conjugate base with hydrogen ions attached to it. In this case, the conjugate base is the carbonate ion, CO₃⁻². This ion can have two hydrogen ions, so the conjugate acid is:

H₂CO₃

This compound is known as carbonic acid.
7 0
3 years ago
The element with the most stable nucleus and smallest mass per particle is
Margaret [11]
"18) the element with the most stable nucleus and smallest mass per particle is:A) uranium.B)argon C) helium."
4 0
3 years ago
An ionic compound is composed of elements X and Y. X forms
mote1985 [20]

Answer: X2Y3

Explanation: I had the same question ;) (and got it right)

7 0
2 years ago
Why is the greenhouse effect important to life on earth
navik [9.2K]

Answer:

Because Greenhouse gases let the sun's light shine onto the Earth's surface, but they trap the heat that reflects back up into the atmosphere. And this way, they act like the glass walls of a greenhouse. This greenhouse effect also keeps the Earth warm enough to sustain life.

Explanation:

8 0
3 years ago
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