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
zmey [24]
3 years ago
15

If 115 g of a substance reacts with 84 g of another substance, what will be the mass

Chemistry
1 answer:
ExtremeBDS [4]3 years ago
3 0

Answer:

199 g

Explanation:

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given reaction:

Reactant A = 115 g

Reactant B = 84 g

Product AB = ?

A      +      B    →    AB

115 g + 84 g  = 199 g

199 g =  199 g

You might be interested in
How many nickel atoms are in a nickel coin with a mass of 3.95g
lyudmila [28]

Answer:

4.05 × 10²² atoms

Explanation:

Step 1: Given data

Mass of nickel: 3.95 g

Step 2: Calculate the moles corresponding to 3.95 g of nickel

The molar mass of nickel is 58.69 g/mol.

3.95 g × (1 mol/58.69 g) = 0.0673 mol

Step 3: Calculate the atoms in 0.0673 moles of nickel

We will use Avogadro's number: there are 6.02 × 10²³ atoms of nickel in 1 mole of atoms of nickel.

0.0673 mol × (6.02 × 10²³ atoms/1 mol) = 4.05 × 10²² atoms

5 0
3 years ago
Explain what a scientific theory is, and what is necessary to make a theory strong and well supported?
Anna35 [415]

in order for a scientific theory to become a scientific law it needs to be tested with generations of data to confirm that it is really true.

7 0
2 years ago
Chemistry: Molarity and Concentrations
kotegsom [21]
I dont know if this correct, but i hope it help

5 0
2 years ago
What is your opinion about:
tatyana61 [14]

Opinion : I disagree recycling can help them, but it still will not clear the environment.

4 0
2 years ago
A variation of the acetamidomalonate synthesis can be used to synthesize serine. The process involves the following steps: Ethox
Alex73 [517]

Answer:

See detailed mechanism in the image attached

Explanation:

The mechanism shown in detail below is the synthesis of serine in steps.

The first step is the attack of the ethoxide ion base on the diethyl acetamidomalonate substrate giving the enolate and formaldehyde.

The second step is the protonation of the oxyanion from (1) above to form an alcohol as shown.

Acid hydrolysis of the alcohol formed in (3) above yields a tetrahedral intermediate, a dicarboxyamino alcohol.

Decarboxylation of this dicarboxyamino alcohol yields serine, the final product as shown in the image attached.

5 0
3 years ago
Other questions:
  • Which law of motion accounts for the following statement? "A car requires brakes in order to stop." first law second law third l
    5·2 answers
  • Although objects can go through physical and changes, the amount of matter in those objects remains the same. This is known as t
    12·1 answer
  • What volume does 18.0g of bromine occupy?
    5·1 answer
  • The average osmotic pressure of blood is about 7 atm. Therefore​
    10·1 answer
  • Who needs a higher caloric intake due to higher calorie expenditure? Person sitting on couch Person walking the dog Person playi
    11·1 answer
  • Before the work of Albert Einstein and other prominent scientists of the early 1900's, the predominant view among
    10·1 answer
  • In the nucleus of an atom, there are 17 protons and 18 neutrons. What is the atomic number? What is the atomic mass? How many el
    7·1 answer
  • Sience question ....
    9·2 answers
  • 3. How did earthquakes help scientists to understand the structure of the earth's crust?​
    5·1 answer
  • What temperature creates hail
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!