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Reika [66]
3 years ago
7

Which of these is an example of how engineers have affected society?

Chemistry
2 answers:
Levart [38]3 years ago
8 0
You can eliminate A, C, and D almost instantly if you know that engineers are construction workers. The answer is B.
Ann [662]3 years ago
8 0

Answer:

B.The use of piers and beams to build a strong foundation for a house

Explanation:

Foundation engineering falls under geotechnical engineering which uses both soil and rock mechanics to design the foundation structure of any building so as to avoid overloading of the soil. Foundation engineering is important to ensure stability and prevent lateral movement of the building.

Cancer research is done by cell biologist. Medical professionals help to cure sick people. Chemists study galvanic corrosion.

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Which of the following increases the concentration of OH- ions?
ludmilkaskok [199]

Answer:

Basee is the answer hope its write xd

7 0
3 years ago
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When carbon-containing compounds are burned in a limited amount of air, some CO(g) as well as CO₂(g) is produced. A gaseous prod
solong [7]

Here, we are going to calculate the mass % of C in the mixture.

What is a Mixture?

A mixture is composed of one or more pure substances in varying composition. There are two types of mixtures: heterogeneous and homogeneous. Heterogeneous mixtures have visually distinguishable components, while homogeneous mixtures appear uniform throughout.

Given that,

The mass % of CO =35.0% =35.0 g in 100 g mixture

The mass % of CO2 = 65% =65 g in 100 g mixture

Therefore,

The mass of C from CO = 15.007 g C

Similarly,

The mass of C from CO2 = 17.738 g C

Thus, the total mass of C = 15.007 g+17.738 g =32.745 g

Therefore,

The mass % of C= 32.745% =32.7%

Thus, the mass % of C in the mixture is 32.7%

To learn more about carbon-containing compounds click on the link below:

brainly.com/question/13381262

#SPJ4

3 0
2 years ago
How are the noble gases stable and do they exist separatly with no other element
Marrrta [24]
Yes they are stable because they follow octet rule but am not sure if they are exist separetly
7 0
3 years ago
Chemistry: Atoms and elements. having trouble figuring out how to find out what element these atoms represent any help will be a
Marrrta [24]

Answer:

Elements are types of atoms that have a unique number of protons. In fact, from left to right, the periodic table is arranged by the number of protons that each element contains. oms make up matter. An atom is the smallest unit of matter that retains all of the chemical properties of an element.

Explanation:

5 0
3 years ago
Save the ________ used to extract metals.
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Answer:

Save the *minerals* used to extract metals.

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