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ZanzabumX [31]
3 years ago
7

According to the law of conservation of matter, we know that the total number of atoms does not change in a chemical reaction an

d
thus mass is conserved. Consider this model of a chemical reaction:
Reactants
Products
+ ?
The Substances
Undergoing Reaction
The Substances
Generated by the Reaction
How many oxygen molecules should be added to the reactants side to obey the law of conservation of matter?
Chemistry
1 answer:
Shkiper50 [21]3 years ago
3 0

Answer:

Compounds are represented by chemical formulas.

Explanation:

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10. A "neutral atom" is one that has the same number of _______ and ______
Paladinen [302]

Answer:

Protons and Electrons

Explanation:

Protons are positively charged particles in an atom and electrons are negatively charged. These charges cancel out to make a neutral atom. For example, Carbon has 6 protons (+6) and 6 electrons (-6). 6 - 6 is 0, making it neutral.

8 0
3 years ago
g Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water and carbon d
LenaWriter [7]

Answer:

6.49g

Explanation:

Let's consider the balanced reaction for photosynthesis.

6 CO₂ + 6 H₂O = C₆H₁₂O₆ + 6 O₂

We can establish the following relations:

  • 1 mole of CO₂ has a mass of 44.01 g (MW 44.01)
  • The molar ratio of CO₂ to C₆H₁₂O₆ is 6:1.
  • 1 mole of C₆H₁₂O₆ has a mass of 180.16 g/mol.

The mass of glucose produced by the reaction of 9.51 g of carbon dioxide is:

9.51gCO_2 \times \frac{1molCO_2}{44.01gCO_2}  \times \frac{1molGlucose}{6molCO_2}  \times \frac{180.16gGlucose}{1molGlucose} = 6.49g Glucose

6 0
3 years ago
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ACTUAL YIELD VS THEORETICAL YIELD?
lawyer [7]

Actual yield over theoretical yield, then multiply by 100

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3 years ago
Which of these reactions can be classified as double replacement reactions?
Kryger [21]
1) Zn + 2 HCl = ZnCl2 + H2 ( <span>single replacement )

2) </span>2 NaCl + F2 = 2 NaF + Cl2 ( <span>single replacement )

3) </span>2 AlBr3 + 3 K2SO4 = 6 KBr + Al2(SO4)3 ( <span>double replacement )

4) </span>2 K + MgBr2 = 2 KBr + Mg ( <span>single replacement )

Answer 3

hope this helps!</span>
4 0
3 years ago
A path that an electric current followos is a
Fed [463]
The flow of electricity is an electric current. The path that an electric currents floes is a circuit.
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