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Dmitrij [34]
3 years ago
7

Pure cement can be used as a building material in theory, but the most common application of cement is as a binder that holds ot

her materials together. Concrete is made by adding water to a mixture of cement (the binder) and sand, pebbles, and gravel (the aggregate), which cures to form a solid structure. Which reasons could explain why concrete is used to make structures rather than pure cement?
Chemistry
1 answer:
IrinaVladis [17]3 years ago
7 0
Concrete is used to make structure rather than cement, because

It is cheaper
It produces a more durable structure
It cures more quickly
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This answer please :)
Artemon [7]

Answer:

ithink it is c but i dont my ghess

Explanation:

i want to do thos for the points tbh

5 0
3 years ago
You see a worm crawling along the ground and wonder if scientists consider it living or nonliving. Which item below would not be
lisov135 [29]

Answer: a. A worm can move so it must be living.

Explanation:

If a worm is moving it is classified as a moving worm also known to be living if moving.

A worm could reproduce therefore it is living.

Worms do pass dirt into and through there bodies to eat of the minerals and discarding things through and let out.

If you do cut a worm in half it may damage it but since it has basically two heads on girl one boy and cut in half it may split them up, and make damage but they will eventually grow back if the injuries are not severe.

        I Gave Some Facts and I Hope This Will Help!

HAPPY NEW YEAR!

4 0
3 years ago
If 3.66•10^23 molecules of a substance have a mass of 24.31g, what is the molar mass of the substance?
BlackZzzverrR [31]
Answer is a I took the quiz
3 0
2 years ago
Read 2 more answers
Sharon reads two different articles about avocados. The first article, in a weight-loss magazine, claims that avocados are unhea
ser-zykov [4K]

Answer:

Is the source an authority on the subject?

Explanation:

To figure out which source is accurate, you want to find out the source's authority on the subject. For  example, if you wanted to learn how to play the piano, you wouldn't go to a dance teacher, you would go to someone who knows how to play the piano. The person who knows how to play the piano has more authority to teach the piano than a dance teacher.

3 0
3 years ago
What is the concentration of H3O+ ions in saliva if [OH-] = 4.22 x 10-10 M? Provide the pH and the classification of this sample
OLEGan [10]

pH=4.625

The classification of this sample of saliva : acid

<h3>Further explanation</h3>

The water equilibrium constant (Kw) is the product of concentration

the ions:

Kw = [H₃O⁺] [OH⁻]

Kw value at 25° C = 10⁻¹⁴

It is known [OH-] =  4.22 x 10⁻¹⁰ M

then the concentration of H₃O⁺:

\tt 10^{-14}=4.22\times 10^{-10}\times [H_3O^+]\\\\(H_3O^+]=\dfrac{10^{-14}}{4.22\times 10^{-10}}=2.37\times 10^{-5}

pH=-log[H₃O⁺]\tt pH=5-log~2.37=4.625

Saliva⇒acid(pH<7)

6 0
3 years ago
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