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Nadusha1986 [10]
3 years ago
12

given the equation Mg +2HCL --> MgCL2+H2, how many moles of hydrochloric acid are needed to react with O.50 mole of magnesium

?
Chemistry
1 answer:
ladessa [460]3 years ago
4 0

Since mole ratio of magnesium to hydrochloric acid is 1:2, the answer is 1 mole of HCL.

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What is the name of the compound made from Sn 4+ and PO4 3-?
givi [52]

Answer:

Sn₃(PO₄)₄ - tin(IV) phosphate.

Explanation:

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2 years ago
A removal of the predator populations from an ecosystem would most likely result in
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The increase of prey

Explanation:

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What is the mass of silver in 4.3g AgNO3?
gregori [183]
4.22 grams.
1. First find out how much AgNO3 weighs with one mole (107.87 g Ag + 14.007 g N + 48 g O = 169.89 grams)
2. Find the percent of Ag you have. So, (107.87 g/mol Ag)/(169.89 g/mol AgNO3)= 0.63 * 100 = 63%.
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5 0
3 years ago
What is the final pressure (expressed in atm) of a 3.05 L system initially at 724 mm Hg and 298 K, that is compressed to a final
maksim [4K]

Hey there!:

V1 = 3.05 L

V2 = 3.00 L

P1 = 724 mmHg

P2 = to be calculated

T1 = 298 K

T2 = 273 K

Therefore:

P1*V1  / T1  = P2*V2 / T2

P2 = ( P1*V1 / T1  )   * T2 / V2

P2 = 724 * 3.05 * 273 / 298 * 3.00

P2 = 602838.6 / 894

P2 = 674.31 mmHg

1 atm ----------- 760 mmHg

atm ------------- 674.31 mHg

= 674.31 * 1 / 760

= 0.887 atm

Hope this helps!

5 0
3 years ago
a solution of common salt and a sample of muddy water are placed separately in two breakers. which one is hetrogeneous and which
arsen [322]

Answer:

a solution of salt is homogeneous mixture

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Explanation:

reason for salt and water as homogeneous mixture because water dissolves salt easily unlikely heterogeneous mixture in which water cannot dissolve mud in it

8 0
3 years ago
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