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3 years ago

25 POINTS!

Chemistry

1 answer:

ryzh [129]3 years ago

4 0

Answer: The Answer is B. Energy can not be created nor destroyed.

Explanation:

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How many moles of nitrate are dissolved in water if 6.15 mole strontium nitrate dissolve?

pashok25 [27]

The number of moles of nitrate dissolved in water if 6.15 mole of strontium nitrate is : 12.3 moles

<u>Given data :</u>

Moles of strontium nitrate = 6.15 moles

<h3>Ionization of Strontium Nitrate </h3>

When strontium nitrate ( $Sr(NO_{3} )_{2}$ ) is placed in water it will dissociates into its ions because strontium nitrate is an ionic compound.

Next step : Represent the ionization of strontium nitrate

$Sr ( NO_{3} )_{2} (aq) --- > Sr^{2+} (aq) + 2NO_{3} ^{-} (aq)$

From the Stoichiometry of the chemical reaction

I mole of strontium nitrate = 2 moles of Nitrate ions

6.15 mole of strontium nitrate = 2 * 6.15

= 12.3 moles of Nitrate

Hence we can conclude that The number of moles of nitrate dissolved in water if 6.15 mole of strontium nitrate is : 12.3 moles.

Learn more about Stoichiometry of chemical reaction : brainly.com/question/27058367

3 0

3 years ago

Chemistry of Volcanic Gases: Balance the following reactions that occur among volcanic gases. Place coefficients directly in fro

Firdavs [7]

In balancing reactions, it is important to remember that each of the side in the reaction should have the same number of elements. We do as follows:

<span>2SO2(g) + O2(g) -> 2SO3(g)

H2S(g) + 3/2O2(g) -> SO2(g) + H2O(g)

Hope this answers the question. Have a nice day.</span>

6 0

4 years ago

Read 2 more answers

What is spring tides

larisa86 [58]

A spring tide is a tide at the shore just after a new or full moon, when there is the greatest difference between high and low water.

4 0

3 years ago

Read 2 more answers

Sodium hydroxide is available commercially as a 50.0% by weight aqueous solution. The density of the solution is 1.53 g/mL. Calc

bulgar [2K]

Answer:

[NaOH] = 19.1 M

Last option.

Explanation:

Sodium hydroxide is available commercially as a 50.0% by weight aqueous solution.

50% by weight means, that in 100 g of solution we have 50 grams of solute.

Molar mass of solute: 40 g/m

Mass / Molar mass = moles

50 g / 40 g/m = 1.25 moles

These are the moles of solute in 100 grams of solution, so we must use density data, so we can find out our volume.

Solution density = Solution mass / Solution volume

1.53 g/mL = 100 g / Solution volume

Solution volume = 100 g / 1.53 g/mL

Solution volume = 65.3 mL

1.25 moles of solute are in 65.3 mL of solution

Molarity = moles /L

Let's convert 65.3 mL in L

65.3 / 1000 = 0.0653 L

1.25 moles /0.0653 L = 19.1 M

3 0

4 years ago

I know this is a very broad question but can someone explain ions, I am so confused.

Vinil7 [7]

There are negative ions and positive ions known as anions and cations.

Atoms of elements (besides the noble gases) are not stable.

These atoms lose or gain electrons to gain the stable electronic configuration of a noble gas which has either 2 electrons or 8 electrons in the valence shell.

Since an atom is neutral, once it loses or gain electrons, it gains charge and is known as an ion

4 0

3 years ago