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Blababa [14]
3 years ago
9

Which of these are correct

Chemistry
1 answer:
aleksley [76]3 years ago
4 0

Answer:

A

Explanation:

I'm doing that rn and that's the answer

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Which substance could any excess not be removed by filtration​
horrorfan [7]

Answer:

sodium hydroxide

Explanation:

i think sodium hydroxide

6 0
3 years ago
In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was quickly spread on the area
storchak [24]

First we must write a balanced chemical equation for this reaction

Na_2CO_3 _(_a_q_)+ 2HNO_3_(_a_q_) \implies 2NaNO_3_(_s_) + CO_2_(_g_) + H_2O_(_l_)

The mole ratio for the reaction between HNO_3 and Na_2CO_3 is 1:2. This means 1 moles of Na_2CO_3 will neutralize 2 moles HNO_3. Now we find the moles of each reactant based on the mass and molar mass.

2500g HNO_3 \times \frac{mol}{63.01g\ HNO_3} = 39.67 mol\ HNO_3

2000g\ Na_2CO_3 \times \frac{mol}{105.99g \ Na_2CO_3} = 18.87 mol\ Na_2CO_3

\frac{18.87 mol Na_2CO_3}{39.67\ HNO_3} = \frac{1 molNa_2CO_3}{2 mol HNO_3}

The Na_2CO_3 was enough to neutralize the acid because 18.87:39.67 is the same as 1:2 mol ratio.

4 0
3 years ago
In order to determine if 2 atoms are cooper what must be the same for each
galina1969 [7]
-number of electrons
-atom size
-charge of the atom
-number of protons
4 0
3 years ago
(6.21×10^3)(0.1050) <br><br>(Scientific Notation)
mel-nik [20]
6.21 x 10^3 = (Move decimal point 3 spaces to the right)

6210

6210 (0.1050)

652.05
3 0
3 years ago
1. The side-by-side overlap of p orbitals produces what kind of bond?
Dmitry_Shevchenko [17]
A pi bond... hope this helps!!!!!
4 0
3 years ago
Read 2 more answers
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