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
Allushta [10]
3 years ago
7

What is cement and who invented it?

Chemistry
1 answer:
Sonja [21]3 years ago
5 0

Answer:

Cement is a combination of calcium, silicone, aluminum, iron and lots of other ingredients to make side walks, home made crafts, etc. The person who invented concrete is Joseph Aspdin.

Explanation:

You might be interested in
As the temperature of a fixed volume of a gas increases the pressure wil
Sati [7]

Answer:

As the temperature of a fixed volume of a gas increase the pressure will increase.

Explanation:

According to the Gay- Lussac's Law,

" The pressure of given amount of gas is directly proportional to the temperature at a constant volume"

Mathematical expression:

           P ∝ T

          P = CT

          P / T = C

As the temperature increase, the pressure also increase.

The initial and final expression of volume and pressure can be written as,

P₁ / T₁  = P₂ / T₂

3 0
3 years ago
What behavior of light PROVES that it is a wave? Hint: will this ONLY happen because light is a wave, or could it also be true o
irina [24]

Answer:

Light changes speed in a glass of water.

Explanation:

8 0
3 years ago
Elements that have atoms with stable valence electron configurations in the ground state are found in
dsp73

Answer:

Group 18, also known as the Noble Gasses

Explanation:

Atoms strive for full stability by gaining or losing electrons to get 8 valence electrons in their valence shell, but Group 18 already has 8 electrons in their valence shell, and are therefore already stable in their ground state.

5 0
3 years ago
A catalyst
kotegsom [21]
A catalyst speeds up the rate of reaction so the answer is B.
8 0
3 years ago
"You are asked to classify an exocrine gland found in the skin based solely on the chemical analysis of its product, which turns
Mice21 [21]

Answer:

sweat glands

Explanation:

sweat glands are the only ones that can produce dermcidin, Nacl, urea and ammonia.  

5 0
3 years ago
Read 2 more answers
Other questions:
  • Organic compounds are distinguished by molecules that contain ________ bonded to other elements.
    14·1 answer
  • Balance the following redox reaction in acidic solution: H+(aq)+Zn(s)→H2(g)+Zn2+(aq)
    9·1 answer
  • Which element, Phosphorus or Calcium, is more reactive? Why?
    6·1 answer
  • Ipt Hydrogen and oxygen react to produce water. Which of the following is the correctly balanced chemical equation
    6·1 answer
  • (25points) Explain in your own words the difference between atomic mass and atomic number. Where can you find this information o
    9·2 answers
  • What type of  reaction does Al+FeO--->Al2O3+Fe have ?
    15·1 answer
  • Write the chemical name for P3F4?<br> Correct spelling counts!
    12·1 answer
  • Grass → rabbit → fox
    11·1 answer
  • SOMEONE PLEASE HELP ME WILL MARK BRAINLIEST PLEASE!!
    13·1 answer
  • In a paragraph, explain what the story of the Gadarene demoniac teaches us about our life in Christ.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!