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Svetllana [295]
4 years ago
12

Vincent combines sodium and chlorine in two different beakers (beaker X and beaker Y). In both beakers, the chemical reaction sh

own below occurs.
Chemistry
1 answer:
svlad2 [7]4 years ago
4 0

Answer: the chemical change will occur faster in beaker X.

Explanation:

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What coefficient must be added to the carbon in the reactants to balance the following equation?
Sophie [7]

Answer:

2

Explanation:

There are  3 carbons on the right side

there are only two on the left side....you need one more ...so add one more... change the '1' coefficient in front of C   to  '2'

7 0
2 years ago
What mass of metallic silver can form from 1.147 g of copper metal according to equation b?
Arisa [49]

Answer:

        \large\boxed{\large\boxed{3.894g}}

Explanation:

From similar question, equation (b) is

Molecular Equation:

  • Cu(s) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)

Net Ionic Equation:

  • Cu(s) + 2Ag⁺(aq) → Cu²⁺(aq) + 2Ag(s)

<u>1. Mole ratio:</u>

       \dfrac{2molAg(s)}{1molCu(s)}

<u>2. Convert 1.147 g of Cu(s) to moles:</u>

  • Atomic mass of Cu: 63.546g/mol

  • Number of moles = mass in grams / atomic mass

  • Number of moles = 1.147 g / 63.546 g/mol = 0.01805 mol Cu(s)

<u />

<u>3. Calculate the moles of Ag(s):</u>

    0.01805molCu(s)\times \dfrac{2molAg(s)}{1molCu(s)}=0.03610molAg(s)

<u />

<u>4. Convert 0.03610 mol Ag(s) to grams:</u>

  • Atomic mass of Ag(s) = 107.868g/mol

  • Mass = 0.03610mol × 107.868g/mol = 3.894g
4 0
4 years ago
Air is made up of about 21% oxygen and 78% nitrogen.
gladu [14]
I believe its A "Air is made up of about 21% oxygen and 78% nitrogen. In this solution, oxygen is the solute and nitrogen is the solvent.
6 0
4 years ago
How do you determine the number of valence electrons in an atom?
sdas [7]
The number of Valence electrons are the same number as the group the element is in. For example Carbon is in group 4 and has 4 Valence electrons.
8 0
3 years ago
Use the problem below to answer the question: When a current is passed through a solution of salt water, sodium chloride decompo
allochka39001 [22]
M(NaCl)/{2M(NaCl)}=m(Cl₂)/M(Cl₂)

m(Cl₂)=M(Cl₂)m(NaCl)/{2M(NaCl)}

m(Cl₂)=70.90*7.5/{2*58.44}=4.55 g

m(Cl₂)=4.55 g
3 0
4 years ago
Read 2 more answers
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