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Elan Coil [88]
3 years ago
14

What is formed from joining positive and negative ions

Chemistry
1 answer:
dsp733 years ago
4 0
I think it’s an ionic bond
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How many carbon atoms are present in 0.46 moles of C2H6O?
s2008m [1.1K]
Number of atoms in 1 mole = 6.023 * 10²³
Number of atoms in 0.46 mole = 0.46 * 6.023 * 10²³
It is = 2.77 * 10²³ atoms (Approx.)

In short, Your Answer would be Option B

Hope this helps!
3 0
4 years ago
I'm having trouble balancing these. Can you help me​
AlekseyPX

Answer:

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3 years ago
If 81g of water is measured out, how many moles are in the sample? *
valkas [14]

Answer:

D

Explanation:

because moles = mass /mr

so 81/18(mr of H2O=2+16)

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7 0
3 years ago
Use the reaction given below to solve the problem that follows: Calculate the mass in grams of aluminum oxide produced by the re
bearhunter [10]

Answer:  28.4 g of aluminum oxide is produced by the reaction of 15.0 g of aluminum metal

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}   

\text{Moles of} Al=\frac{15.0g}{27g/mol}=0.556moles

The balanced chemical equuation is:

4Al+3O_2\rightarrow 2Al_2O_3  

According to stoichiometry :

4 moles of Al produce == 2 moles of Al_2O_3

Thus 0.556 moles of Al will produce=\frac{2}{4}\times 0.556=0.278moles  of Al_2O_3

Mass of Al_2O_3=moles\times {\text {Molar mass}}=0.278moles\times 102g/mol=28.4g

Thus 28.4 g of aluminum oxide is produced by the reaction of 15.0 g of aluminum metal.

7 0
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How US is the most developed country?
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 I believe in what USA was and is able to achieve, and trust the nation in many but every ways. What really made it a developed nation is the things that happened in the last 3 Centuries, some of which are;

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3 years ago
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