3 years ago

Which is the main source of dissolved oxegyn in the ocean

Chemistry

1 answer:

kolezko [41]3 years ago

6 0

Answer:phytoplankton

Explanation:

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SELECT THE STATEMENT ABOUT ELECTRONS AND ATONS THAT IS TRUE 1.EACH ORBITS HOLDS A FIXED NUMBER OF ELECTRONS 2.THE N=1 ORBIT CAN

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Cacl2+2AgNO3(aq)-> Ca(No3)2 (aq)+2AgCl (s) if 25.0mL of a 2.00 m CaCl2 solution is used for the reaction shown above how many

antiseptic1488 [7]

Answer:

$n_{Cl^-}=0.1molCl^-$

Explanation:

Hello,

In this case, given the 2.00 M solution, we can compute the moles of calcium chloride that reacted:

$n_{CaCl_2}=2.00\frac{mol}{L} *25.0mL*\frac{1L}{1000mL}=0.05molCaCl_2$

Then, since in one mole of calcium chloride, we find two moles of chloride ions (see subscript), we can compute the moles of chloride ions that were involved in the reaction as shown below:

$n_{Cl^-}=0.05molCaCl_2*\frac{2molCl^-}{1molCaCl_2}\\ \\n_{Cl^-}=0.1molCl^-$

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3 years ago

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What holds the hydrogen and oxegyn atoms together in a water molecule

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