1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yuri [45]
4 years ago
5

How do you solve a chemical reaction

Chemistry
1 answer:
Setler [38]4 years ago
5 0

The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error.

You might be interested in
How many moles of Ag+ ions are present in 10 ml of a 0.75 M AgNO3 solution?
lana66690 [7]

Answer:

b. 7.5 x 10^-3

Explanation:

To solve this problem we need to keep in mind the <em>definition of molarity</em>:

  • Molarity = moles of solute / liters of solution

With the above information in mind it is possible to calculate the moles of solute, given the volume (10 mL) and concentration (0.75 M) of the solution:

  • First we<u> convert 10 mL to L</u> ⇒ 10 mL / 1000 = 0.01 L

Then we <u>calculate the moles of AgNO₃</u>:

  • moles of solute = Molarity * Liters of solution
  • 0.01 L * 0.75 M = 7.5x10⁻³ mol AgNO₃

<em>One mole of AgNO₃ contains one mole of Ag⁺</em>, thus the number of Ag⁺ moles is also 7.5x10⁻³.

5 0
3 years ago
Which equation represents a change that results in an increase in disorder?(1 ) I2(s)=&gt;I2(g)
ankoles [38]

Answer : The correct option is, (1) I_2(s)\rightarrow I_2(g)

Explanation :

Entropy : It measures the disorderedness or randomness of the molecule.

That means higher the disorderedness, higher will be the entropy.

As we are going from solid state to liquid state, liquid state to gaseous state, the disorderedness increases due to the less inter-molecular interaction between the molecules.

And, as we are going from gaseous state to liquid state, liquid state to solid state, the disorderedness decreases due to the more inter-molecular interaction between the molecules.

(1) I_2(s)\rightarrow I_2(g)

In this reaction, the disorderedness increases because the state changes from solid to liquid.

(2) CO_2(g)\rightarrow CO_2(s)

In this reaction, the disorderedness decreases because the state changes from gaseous to solid.

(3) 2Na(s)+Cl_2(g)\rightarrow 2NaCl(s)

In this reaction, the disorderedness decreases because the state changes from gaseous to solid.

(4) 2H_2(g)+O_2(g)\rightarrow 2H_2O(l)

In this reaction, the disorderedness decreases because the state changes from gaseous to liquid.

Hence, the correct option is, (1) I_2(s)\rightarrow I_2(g)

8 0
3 years ago
Read 2 more answers
You need to prepare an acetate buffer of pH 5.36 from a 0.900 M acetic acid solution and a 2.62 M KOH solution. If you have 680
Alexus [3.1K]

Answer:

Explanation:

pH = pKa + log [ CH₃COO⁻ ] / [CH₃COOH ]

5.36 = 4.86 + log [ CH₃COO⁻ ] / [CH₃COOH ]

log [ CH₃COO⁻ ] / [CH₃COOH ]  = .5

[ CH₃COO⁻ ] / [CH₃COOH ]  = 3.16

moles of CH₃COOH = .680 x .9 = .612 M

Let  x mole of KOH is required

x /( .612 - x ) = 3.16

x = 1.933 - 3.16 x

x = .46488

.46488 moles of KOH will be required

volume required be V

v x 2.62 =  .46488

v = .1774 L

= 177.4 mL

177.4 mL  of  2.62 M KOH will be required .

6 0
3 years ago
Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH
aalyn [17]

Answer:as you add the base it added some  PH. The Ph lever of white winegaer is2.4 - 3.4

Explanation:

7 0
3 years ago
ANSWER NEEDED ASAP!!!! Heat energy always flows in which direction?
Marta_Voda [28]

Answer:

A. Hot to Cold ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌‌ ‌ ‌ ‌

6 0
4 years ago
Other questions:
  • What is the pH at each of the points in the titration of 25.00 mL of 0.2000 M
    10·1 answer
  • Two chemical samples were heated individually in a flame and both produced an identical orange flame. What conclusion can you dr
    15·1 answer
  • An unknown radioactive substance has a half-life of 3.20 hours . If 22.8 g of the substance is currently present, what mass A0 w
    15·1 answer
  • Assuming all volume measurements are made at the same temperature and pressure, what volume of hydrogen gas is needed to react c
    10·2 answers
  • For a reaction with ΔH o = 65 kJ/mol, decide if the following statement is true. If the statement is false, choose the statement
    14·1 answer
  • A sample of helium gas has a volume of 2.0 L at a pressure of 4.0 atm. What is the volume of gas at 380 mmHg
    14·1 answer
  • ANSWER FAST PLZ 25 POINTS!!!!!!!!!!!!!!!
    7·1 answer
  • Which element has a higher first ionization energy than carbon
    9·1 answer
  • What is a heritable trait​
    11·1 answer
  • The name given to the main group elements in group 2 is _______.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!