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
De que material estan echos los marcapasos​
ZanzabumX [31]

Answer:

Hm creo que es La carcasa es de titanio y la batería está compuesta de acumuladores de litio y yodo, que pueden durar cerca de diez años. Los electrodos que lo componen pueden ser de distintos tipos, pero sus puntas, que no están aisladas, son de platino, y el número de los mismos dependerá de las necesidades de cada paciente

Explanation:

3 0
3 years ago
Read 2 more answers
5. Can you determine the number of neutrons in the nucleus of an atom by looking at the element's average atomic mass and the at
Shkiper50 [21]

Answer:

No you can't

Explanation:

The atomic number is the amount of protons in element's nucleus, that's one reason why. The second reason is that the atomic mass is protons and neutrons combined, their estimated value, which doesn't show how much neutrons are in an element. It does show combined, but not specifically neutrons

7 0
3 years ago
Which of the following is not an antioxidant _________
Andrews [41]

Answer: 1. Sodium Benzoate

Explanation: An anti-oxidant is a substance that can help prevent or stop the damage done by free radicals. Examples include; Sulphur Dioxide, Sulphite Salts, Citric Acid, e.t.c

Sodium benzoate is a pure preservative.

7 0
3 years ago
Which order is correct in listing the bond lengths from shortest to longest? A. single, double, triple B. triple, double, single
Alex787 [66]
A I believe would be the answer
3 0
3 years ago
Consider the temperature versus time graph below. I which region is the substance in both the solid phase and the liquid phase?
SVEN [57.7K]

Answer:

2

Explanation:

The change of state occurs at a constant temperture and pressure. In the grahp we can see while the time passes, the temperature doesn't change.

The rect number 4 correspond to a liquid-gas phase

8 0
3 years ago
Read 2 more answers
Other questions:
  • Four nails have a total mass of 4.42 grams how many moles of iron atoms do they contain
    5·1 answer
  • Why is earth likely unique in it volume of liquide water
    15·1 answer
  • 1-butanol yields 1-bromobutane in the presence of concentrated sulfuric acid and an excess of sodium bromide. CH3CH2CH2CH2OH (l)
    8·1 answer
  • What is the molar mass of c25h52​
    8·2 answers
  • The following diagram represents a vertical cross section of sedimentary rock layers that have not been overturned. Which princi
    11·1 answer
  • A certain flexible weather balloon contains 7.4 L of helium gas. Initially, the balloon is in WP at 8500ft, where the temperatur
    7·1 answer
  • CCC Patterns Changes in the state of matter (solid, liquid, gas) are the result of different energy levels at the molecular leve
    7·1 answer
  • PLEASE HELP!!!!!! WILL AWARD BRAINLIEST!!!!!!
    9·1 answer
  • The electron configuration of an element is electrons 1s^ 2 2s^ 2 2p^ 6 . Describe what most likely happens when an atom of this
    15·1 answer
  • Hydrogen and iodine gas react to form hydrogen iodide, as shown in the equation H2(g) + I2(g) → 2HI(g). Suppose you are given a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!