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Umnica [9.8K]
3 years ago
8

Item 6

Chemistry
2 answers:
Nimfa-mama [501]3 years ago
7 0

Answer:

It's west.

Explanation:

I picked north and got it wrong. I'm not sure why it's wrong but it is -_-

allsm [11]3 years ago
6 0

Answer:

north is the word that best completes the sentence

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The formula of an iodate of lanthanum is la(io3)3. what is the formula of the sulfate of lanthanum with the same oxidation numbe
sammy [17]

Iodate has a charge of -1, this means its chemical symbol must be IO3(-1) while Lanthanum is La(+3). Therefore making the compound La(IO3)3.

However sulfate has a chemical symbol of SO4(-2), it has charge of -2, therefore the formula for lanthanum sulfate is:

<span>La2(SO4)<span>3</span></span>

8 0
3 years ago
Read 2 more answers
How do you find empirical formula
kifflom [539]

Answer:

Convert the mass of each element to moles using the molar mass from the periodic table. then Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number

6 0
3 years ago
HELP
Vesnalui [34]

Answer:

145.8g

Explanation:

Given parameters:

Number of moles of magnesium hydroxide  = 2.5mol

Unknown:

Mass of Mg(OH)₂  = ?

Solution:

To solve this problem we use the expression below;

  Mass of Mg(OH)₂ = number of moles x molar mass

 Molar mass of Mg(OH)₂ = 24.3 + 2(16 + 1)  = 58.3g/mol

 Mass of Mg(OH)₂ = 2.5 x 58.3  = 145.8g

3 0
3 years ago
During photosynthesis, the following reaction takes place: carbon dioxide + water + light energy → sugar + oxygen During cellula
Pachacha [2.7K]

Answer:

It cost Evan $17.70 to send 177 text messages. How many text messages did he send if he spent $19.10?

Explanation:

I cant do this

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2 years ago
Difference between emprical and molecular formula
Musya8 [376]

Answer:

The key difference between empirical and molecular formulas is that an empirical formula only gives the simplest ratio of atom whereas a molecular formula gives the exact number of each atom in a molecule.

3 0
3 years ago
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