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
belka [17]
3 years ago
13

An alloy of bronze is manufactured by melting 51.2 g of copper with 6.84 g of tin. What is the percent copper in the bronze?

Chemistry
1 answer:
Harlamova29_29 [7]3 years ago
5 0

Answer:

Percentage of copper = 88%

Explanation:

Given data:

Mass of copper = 51.2 g

Mass of tin = 6.84 g

Percentage of copper = ?

Solution:

Formula:

Percentage of copper = mass of copper / total mass × 100

Now we will determine the total mass:

Total mass = mass of copper + mass of  tin

Total mass = 51.2 g + 6.84 g

Total mass = 58.04 g

Now we will calculate the percentage of copper.

Percentage of copper = 51.2 g / 58.04 g × 100

Percentage of copper = 0.88 × 100

Percentage of copper = 88%

You might be interested in
The process of removal of oxygen in a chemical reaction is called?
solmaris [256]

Answer:

Deoxygenation

Explanation:

This is when an oxygen atom is taken out of something, example when sand turns black in the mud flats.  The sand is being deoxygenated by the ghost shrimp.  Pulling oxygen from it.  

3 0
3 years ago
Read 2 more answers
Using this balanced equation: 2 NaOH + H2SO4 —> H2O + Na2SO4
mars1129 [50]
<h3>Answer:</h3>

266.325 g

<h3>Explanation:</h3>

We are given the balanced equation;

2NaOH + H₂SO₄ → H₂O + Na₂SO₄

  • Mass of NaOH as 150 g

We are required to determine the mass of Na₂SO₄ that will be formed.

<h3>Step 1: Determine the number of moles of NaOH</h3>

Moles = Mass ÷ molar mass

Molar mass of NaOH is 40.0 g/mol

Therefore;

Moles of NaOH = 150 g ÷ 40 g/mol

                          = 3.75 moles

<h3>Step 2: Determine the number of moles of sodium sulfate formed</h3>
  • From the equation 2 moles of NaOH reacts with sulfuric acid to form 1 mole of sodium sulfate.
  • Therefore; mole ratio of NaOH : Na₂SO₄ is 2 : 1

Thus, moles of Na₂SO₄ = Moles of NaOH ÷ 2

                                      = 3.75 moles ÷ 2

                                     = 1.875 moles

<h3>Step 3: Determine the mass of Na₂SO₄ produced.</h3>

we know that;

Mass = Moles × Molar mass

Molar mass of Na₂SO₄ is 142.04 g/mol

Therefore;

Mass of Na₂SO₄ = 1.875 moles × 142.04 g/mol

                           = 266.325 g

Thus, the mass of sodium sulfate formed 266.325 g

7 0
3 years ago
Under which of the following conditions would a chemical reaction most likely proceed at the fastest rate?
Valentin [98]
<h2>Answer:</h2>

Option A is correct

Adding an enzyme to decrease the activation energy of the reaction

<h2>Explanation:</h2>

Enzymes are the biological catalyst. They are proteins in nature. They are naturally found in humans,animals,micro-organisms,plants etc. They catalyze the chemical reactions by lowering activation energy and without being consumed in it.

6 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!!
andreev551 [17]

The average atomic mass of the imaginary element : 47.255 amu

<h3>Further explanation  </h3>

The elements in nature have several types of isotopes  

Isotopes are elements that have the same Atomic Number (Proton)  

Atomic mass is the average atomic mass of all its isotopes  

Mass atom X = mass isotope 1 . % + mass isotope 2.% ..

isotope E-47 47.011 amu, 87.34%

isotope E-48 48.008 amu, 6.895

isotope E-49 50.009 amu, 5.77%

The average atomic mass :

\tt avg~mass=0.8734\times 47.011+0.06895\times 48.008+0.0577\times 50.009\\\\avg~mass=41.059+3.310+2.886\\\\avg~mass=47.255~amu

5 0
2 years ago
Which of the following best shows two element combining to form a compound
marshall27 [118]

Answer:

there are no examples but 1 example is H2O which has 2 elements combining a compound.

Explanation:

6 0
2 years ago
Other questions:
  • Consider the following reaction. The system is allowed to reach an equilibrium and then FeS2(s) is added. What will happen if Fe
    10·1 answer
  • Which of these is a harmful interaction?
    7·1 answer
  • Connectivity is an example of which type of property?​
    11·1 answer
  • 6. Antibiotics which do not have bactericidal
    14·1 answer
  • What is the correct chemical formula for copper carbonate
    8·2 answers
  • If some the hexane had evaporated from the stearic acid solution, what effect (if any) would it have on the experimental value o
    10·1 answer
  • 4. There are 1.9 moles of Oxygen gas at a pressure of 3.50 atm, and the temperature is 65°C. What is the
    12·1 answer
  • HELP QUICKLY PLEASE!!! Thermal energy is transferred from a hot object to a colder object by means of ___
    9·1 answer
  • Balance the following redox reaction if it occurs in basic solution. What are the coefficients in front of Br2 and OH- in the ba
    5·1 answer
  • Part 1. A chemist reacted 18.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF. Use the ideal gas law equat
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!