3 years ago

10 Points! Help please!

Chemistry

1 answer:

icang [17]3 years ago

8 0

Your answer to that question is Fand N

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How many grams are in 2.3 moles of calcium phosphate, Ca3(PO3)2

irina1246 [14]

Moles = mass/molar mass
moles = 2.3
molar mass = 278
=> mass = moles*molar mass = 639.4g

6 0

3 years ago

Calculate the molarity of the two solutions.

daser333 [38]

1. 0.33 M

2. 0.278 M

<h3>Further explanation</h3>

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

$\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}$

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

1. 0.350 mol of NaOH in 1.05 L of solution.

n=0.35

V=1.05 L

Molarity :

$\tt M=\dfrac{0.35}{1.05}=0.33$

2. 14.3 g of NaCl in 879 mL of solution.

mol NaCl(MW=58.5 g/mol) :

$\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{14.3~g}{58.5~g/mol}=0.244$

Molarity :

$\tt M=\dfrac{0.244}{0.879~L}\\\\M=0.278$

4 0

2 years ago

Please help ASAP 29 points Which individual elements make up the

Inessa [10]

Calcium carbon oxygen, calcium chlorine , carbon hydrogen oxygen, hydrogen chlorine, calcium oxygen hydrogen. pretty sure they’re right

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3 years ago

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Vesnalui [34]

Isn't that Hund's rule????

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A metallic conductor moving at a constant speed in a magnetic field may develop a voltage across it. this is an example of _____

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Hope this helps!

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3 years ago