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Natalka [10]
3 years ago
11

theres this really cute boy in my science class and i asked him if he wanted to be my lab partner and he said yes he doesn't tal

k to anyone else how do I know if he likes me....?
Chemistry
2 answers:
salantis [7]3 years ago
8 0
Who cares what he thinks or anyone else, life is a crazy experience just go say hi to him get his number and see if he'd like to go have a date, live and love.
natita [175]3 years ago
3 0
Make small talk and become his friend get to know him if he opens up he trust you and then you take it from there.
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One of the commercial uses of sulfuric acid is the production of calcium sulfate and phosphoric acid. If 26.8 g of Ca₃(PO₄)₂ rea
d1i1m1o1n [39]

Answer:

The percent yield reaction is 64.3%

Explanation:

This is the ballanced reaction

Ca₃(PO₄)₂ (s) + 3H₂SO₄ (aq) → 2H₃PO₄ (aq) + 3CaSO₄ (aq)

Let's determine the moles of our reactants:

Mass / Molar mass = Mol

26.8 g / 310.18 g/m = 0.0864 moles of phosphate.

54.3 g / 98.06 g/m = 0.554 moles of sulfuric

1 mol of phosphate reacts with 3 mol of sulfuric so

0.0864 mol of PO₄⁻³ will react with (0.0864 .3)/1 = 0.259 moles

I have 0.554 of sulfuric, so this is the reactant in excess.

The limiting reagent is the Phosphate.

1 mol of PO₄⁻³ produces 2 mol of phosphoric

0.0864 of PO₄⁻³ will produce the double amount (0.0864 .2) = 0.173 moles

Mol . molar mass = Mass

0.173 m . 97.98g/m = 16.95 g (This is the theoretical yield)

Percent yield = (Produced / Theoretical) .100

(10.9 g / 16.95 g) . 100 = 64.3 %

5 0
3 years ago
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How many lone pairs of electrons in lewis structure of CH3 OH
Brums [2.3K]
There would be 2 which would be on the oxygen
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3 years ago
What color is a mirror?
svp [43]

Depending what’s in front of a mirror

8 0
3 years ago
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Someone please help me please
igor_vitrenko [27]

Answer:

point 2 and 4

Explanation:

because at those point temperature is constant

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1s22s22p63s23p6 How many unpaired electrons are in the atom represented by the electron configuration above?
pickupchik [31]

Answer:

0

Explanation:

There are no unpaired electrons in the given element. It must be noted that for the atom above, we have even numbered electrons. The total electron we are having here is 18.

Now, we must also know that while the s orbital is not degenerate, the P orbital is degenerate. What this mean is that the p orbital is broken down into three different sub orbitals which is the Px , Py and Pz. Hence we can see that there are 6 electrons to enter into the P orbital too.

We can see that all the S orbitals have been completely filled with two electrons alike each. This is also the case for the P orbital as the 3 suborbitals take in 2 each to give a total of six

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3 years ago
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