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olganol [36]
3 years ago
7

What mass of solute is needed to prepare each of the following solutions?

Chemistry
1 answer:
noname [10]3 years ago
5 0

Answer:

a. 21.7824 g

b. 0.2362 g

c. 31.5273 g

Please see the answers in the picture attached below.

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

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Find the number of cations present in 7g of sodium prosphate Na=23 g/mol O=16g/mol P=31g/mol​
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Answer:    This contains magnesium, Mg2+, and hydroxide, OH–

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each hydroxide ion is -1: two -1 ions are needed for one +2 ion, and the formula for magnesium

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hope that helped!!

3 0
3 years ago
How many dimes could you trade for 360 pesos? $1 = 1500 pesos.
sveta [45]

Answer:

The correct option is (d).

Explanation:

It is given that,

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We need to convert 360 pesos into dimes

We can convert 360 pesos to dollars as follows:

360\ \text{pesos}=\$\dfrac{1}{1500}\times 360\\\\=$0.24

360 pesos is equal to $0.24

Also, 1 dollar = 10 dimes

We can covert 0.24 dollar to dimes as follows :

0.24 dollar = 10 × 0.24 dimes

0.24 dollar = 2.4 dimes

or

360 pesos = 2.4 dimes

7 0
3 years ago
Rusting Out. How Acids Affect the Rate of corrosion
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Acids change the rate Corrosion and increase its temperature. 
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Which would be a good source to find weather information about your town from last month?
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a reference book about weather

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How is it possible to predict the type of bond that is likely to be found in a substance? what types of atoms generally form ion
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Using electronegativity difference is a good guide to the ionic/ covalent nature. Large differences indicate greater ionic character, small differences more covalent character. The larger the difference in electronegativity the more ionic properties a bond is said to have. The smaller the difference in electronegativity the more covalent properties a bond is said to have. 
Ionic bonding is formed through electrostatic attraction between a cation and anion. Foe example, Sodium fluoride has ionic bonding because it is composed by sodium and Fluorine (a non metal). On the other hand, covalent bonding is characterized by atoms sharing pairs of electrons. For example; methane has covalent bonding; carbon has 4 valence electrons and hydrogen has 1; when they bond they have a total of 8 electrons and satisfies the octet rule. 
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3 years ago
Read 2 more answers
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