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2 years ago

What is the ionic formula for lithium oxide?

Chemistry

2 answers:

-Dominant- [34]2 years ago

5 0

Li20 Hope I Helped! :)

natali 33 [55]2 years ago

4 0

Li₂O is the ionic formula

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If you have 8.943 L of carbon monoxide gas at SATP, how many moles would it contain?

viktelen [127]

1mole contains 22.4Lmol^-1
xmole contains 8.943
cross-multiply
x=1×8.943/22.4
x=0.40mole
there it contains 0.40moles.

8 0

2 years ago

I need help with my homework.Calculate the number of formula units in: 41.5 grams CaBr2

lana66690 [7]

Answer:

$\text{ }1.25\times10^{23}\text{ formula units}$

Explanation:

Here, we want to calculate the number of formula units in the given molecule

We start by getting the number of moles

To get the number of moles, we have to divide the mass given by the molar mass

The molar mass is the mass per mole

The molar mass of calcium bromide is 200 g/mol

Thus, we have the number of moles as follows:

$\frac{41.5}{200}\text{ = 0.2075 mol}$

The number of formula units in a mole is:

$1\text{ mole = 6.02 }\times10^{22}\text{ formula units}$

The number of formula units in 0.2075 mole will be:

$0.2075\text{ }\times6.02\times10^{23}\text{ = }1.25\times10^{23}\text{ formula units}$

5 0

9 months ago

The specific heat capacity of an unknown metal is 0.343 J/(g•°C). Calculate the energy required to raise the temperature of 224

Margarita [4]

Explanation:

the answer and explanation is in the picture

hope this helps

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8 0

2 years ago

Why are lonic Compounds brittle?

Kruka [31]

Ionic crystals are hard because of tight packing lattices, say, the positive and negative ions are strongly attached among themselves.

3 0

2 years ago

If you measured out 100.0g of water, how many molecules of water would you have drank?

12345 [234]

<h3>Answer:</h3>

3.342 x 10^24 molecules of water

<h3>Explanation:</h3>

Given;

Mass of water = 100.0 g

Required to determine the number of molecules in 100.0 g of water

Using Avogadro's constant

1 mole of a compound contains 6.022 × 10^22 molecules

Thus;

1 mole of H₂O contains 6.022 × 10^23 molecules

But;

1 mole = 18.02 g/mol

Therefore;

18.02 g of water contains 6.022 × 10^23 molecules

100.0 g of water will have;

= (100. 0 g ×6.022 × 10^23 molecules) ÷ 18.02

= 3.342 x 10^24 molecules

8 0

2 years ago