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3 years ago

Which equation represents neutralization?

Chemistry

1 answer:

earnstyle [38]3 years ago

6 0

Answer:

3) 2KOH(aq) + H2SO4(aq) ⇒ K2SO4(aq) + 2H2O(l)

Explanation:

KOH is a strong base and a H2SO4 is a strong acid. The two react in a neutralization reaction, producing a salt and water.

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Using the periodic table, choose the more reactive nonmetal.<br><br> Br or As

Hatshy [7]

Answer:

bromine is more reactive non-metal.

Explanation:

Both the elements have to gain 1 electron but the size of bromine is less than the size of astatine. And therefore, the tendency of accepting an electron by bromine is more than the tendency of astatine. Hence, bromine is more reactive non-metal.

6 0

3 years ago

Read 2 more answers

If two oceanic plates move towards each other at a convergent boundary, then_____ may occur.

mojhsa [17]

Earthquake and mountains

6 0

3 years ago

Read 2 more answers

A 50.00 mL sample of groundwater is titrated with 0.0800 M EDTA . If 10.90 mL of EDTA is required to titrate the 50.00 mL sample

vitfil [10]

Answer:

0.01744 M is the hardness of the groundwater.

1,744 ppm is the hardness of the groundwater in parts per million of calcium carbonate by mass.

Explanation:

$Ca(In)^{2+}(red)+EDTA\rightarrow Ca(EDTA)^{2+}+In(blue)$

In = Indicator

Concentration of calcium ion in groud water = $C_1=?$

Volume of ground water = $V_1=50.00 mL$

Concentration of EDTA solution = $C_2=0.0800 M$

Volume of EDTA solution = $V_2=10.90 mL$

$C_1V_1=C_2V_2$

$C_1=\frac{C_2V_2}{V_1}=\frac{0.0800 M\times 10.90 mL}{50.00 mL}=0.01744 M$

$CaCO_3(sq)\rightarrow Ca^{2+}(aq)+CO_3^{2-}(aq)$

$[CaCO_3]=[Ca^{2+}]$

So. $[CaCO_3]=0.01744 M$

0.01744 M is the hardness of the groundwater.

0.01744 Moles of calcium carbonate are present in 1 Liter of solution.

Mass of 0.01744 moles of calcium carbonate =

$0.01744 mol\times 100=1.744 g$

1 g = 1000 g

1.744 g = 1.744 × 1000 mg = 1,744 mg

$ppm=\frac{\text{Mass of solute) mg)}}{\text{Volume of solution}{L}}$

The hardness of the groundwater in parts per million :

$\frac{1,744 mg}{1 L}= 1,744$

1,744 ppm is the hardness of the groundwater in parts per million of calcium carbonate by mass.

4 0

3 years ago

HELP! <br><br>How many moles of a solute would 3 liters of a 2-molar solution contain?

katrin [286]

Answer: If it was 3 mol of solute in 2 L of solution it would be 1.5 mol/L.

However when the solute dissolves in the water creating the solution, the volume increases. So 3 mol of solute in 2 L of water creates more than 2 L of solution.

The correct method for making a 3 mol/L solution would be to place some water into a two liter volume container. Dissolve all 3 mol of the solute into the water. Then add water to the 2 L mark. Now there is 3 mol of solute and 2 L of solution.

Explanation: I hope this helps XDDDD

8 0

2 years ago

How many moles of Ag will be produced from 46.0 g of Cu, assuming AgNO3 is available in excess?

Xelga [282]

Answer:

1.44 mol

Explanation:

Given data:

Mass of Cu = 46 g

Moles of Ag produced = ?

Solution:

Chemical equation:

Cu + 2AgNO₃ → 2Ag + Cu(NO₃)₂

Number of moles of Cu:

Number of moles = mass/ molar mass

Number of moles = 46 g/63.546 g/mol

Number of moles = 0.72 mol

Now we will compare the moles of Cu and silver from balance chemical equation:

Cu : Ag

1 : 2

0.72 : 2×0.72 = 1.44 mol

Thus from 46 g of Cu 1.44 moles of Ag is produced .

4 0

3 years ago