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
nexus9112 [7]
2 years ago
11

Pure substances include

Chemistry
1 answer:
eduard2 years ago
4 0
B. elements and compounds
You might be interested in
If more solute can be dissolved in a solvent, the solution is:
iragen [17]
The answer is number 1
6 0
3 years ago
Read 2 more answers
Explain why salivary amylase would not digest protein
CaHeK987 [17]

Answer:This particular enzyme promotes the breakdown of starches into simpler sugars which can be absorbed by the body. Salivary amylase, like most other enzymes, is a protein. ... Consequentlysalivary amylase does not function once it enters the stomach.

Explanation:

6 0
3 years ago
What kind of signals does nerve tissue use to convey information?
marshall27 [118]
Glial cells or glia
6 0
2 years ago
If a force of 1.4N is applied to a block with a mass of 7kg, what is the acceleration of the block in meters per second squared?
Anton [14]

Answer:

<h2>0.2 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{1.4}{7} =  \frac{1}{5}   \\

We have the final answer as

<h3>0.2 m/s²</h3>

Hope this helps you

5 0
2 years ago
Read 2 more answers
A certain sample of coal contains 1.60 percent sulfur by mass. when the coal is burned, the sulfur is converted to sulfur dioxid
alina1380 [7]
<span>1.40 x 10^5 kilograms of calcium oxide The reaction looks like SO2 + CaO => CaSO3 First, determine the mass of sulfur in the coal 5.00 x 10^6 * 1.60 x 10^-2 = 8.00 x 10^4 Now lookup the atomic weights of Sulfur, Calcium, and Oxygen. Sulfur = 32.065 Calcium = 40.078 Oxygen = 15.999 Calculate the molar mass of CaO CaO = 40.078 + 15.999 = 56.077 Since 1 atom of sulfur makes 1 atom of sulfur dioxide, we don't need the molar mass of sulfur dioxide. We merely need the number of moles of sulfur we're burning. divide the mass of sulfur by the atomic weight. 8.00 x 10^4 / 32.065 = 2.49 x 10^3 moles Since 1 molecule of sulfur dioxide is reacted with 1 molecule of calcium oxide, just multiply the number of moles needed by the molar mass 2.49 x 10^3 * 56.077 = 1.40 x 10^5 So you need to use 1.40 x 10^5 kilograms of calcium oxide per day to treat the sulfur dioxide generated by burning 5.00 x 10^6 kilograms of coal with 1.60% sulfur.</span>
5 0
3 years ago
Other questions:
  • How many grams of glucose, C6H12O6, in 2.47 mole?
    8·2 answers
  • What are the terms: organic compound and organic chemistry?
    8·1 answer
  • What is the ph of an aqueous solution with a hydrogen ion concentration of [h ] = 9.7 × 10–4 m?
    6·1 answer
  • Place the following compounds in order of increasing vapor pressure. methane, CH4; pentane, CH3CH2CH2CH2CH3; 1-propanol, CH3CH2C
    5·2 answers
  • After an electric sign is turned on the temperature of its glass goes from 23.5°C to 65.5°C. The sign's glass has a mass of 90 g
    9·1 answer
  • Which of the following compounds has only one atom of carbon?
    12·1 answer
  • What is the difference between base alkali and acid in chemistry?
    15·2 answers
  • Which has more mass?
    9·1 answer
  • Which section of the ocean floor is near the coastline of all continents?
    12·1 answer
  • How many grams are in 0.375 mol KBr?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!