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Feliz [49]
2 years ago
7

Would a screwdriver be an example of technology? Why or why not?

Chemistry
2 answers:
Nimfa-mama [501]2 years ago
6 0
No because they is no electricity going through it because it is a hand held device Hope this helps Have a great day Smile More
ratelena [41]2 years ago
4 0
Technology is anything made my man to make tasks easier. So yes, a screwdriver is technology.
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How many grams of nh3 can be produced from 2.86 mol of n2 and excess h2?
IRISSAK [1]
I think <span>3H2+N2==>2NH3</span>
7 0
3 years ago
A standard solution contained 0.8 mg/mL. A student took 2 mL of the standard solution and added 10 mL of water. What is the new/
galben [10]
To get the concentration of the second solution let us use the following formulae

C1V1=C2V2 where C1 is concentration of first solution and V1 is the volume of solution first solution. on the other hand C2 is the concentration of second solution and V2 is the volume of second solution.

therefore

0.8×2=(2+10)×C2
   1.6 =12×C2
1.6/12=C2
C2     = 0.1333mg/mL
7 0
3 years ago
Read 2 more answers
All help is needed, thanks​
yarga [219]

Answer:

  1. smoke
  2. marshmallow
  3. paint
  4. Body spray

Explaination:

Firstly, what are colloids?

Colloids are a mixture of two substances:

  • one of those substances are insoluble and inseparable

There are 4 types of colloids:

  • Sol- Solid in a liquid
  • Emulsion- Liquid in a liquid
  • Foam- Gas in solid/liquid
  • Aerosol- Solid/liquid in gas

So on to the answers:

  • Smoke consists of solid and gas and since the solid is being carried by the gas, it is a solid in a gas (aerosol)
  • Marshmellow consists of tiny air bubbles and sugar(solid), the air bubbles is inside the solid making it a gas in a solid (foam)
  • Body spray turns gas into liquid after spraying it through the can, making it a liquid in a gas (aerosol)
  • Paint dries up to become solid which makes it a solid is a liquid (sol)

Hope y'all understand

3 0
3 years ago
How can the law of conservation of<br> mass for a chemical reaction be expressed?
djverab [1.8K]

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Explanation:

How does the concept of conservation of mass apply to chemical reactions? the reactants and products have exactly the same atoms. the reactants and products have exactly the same molecules. the change in the amount of matter is equal to the change in energy.

can someone help me with my qustions?

5 0
3 years ago
Why is it dangerous to have electric appliances near you when you are taking a bath?
VashaNatasha [74]

Answer:

Because water conducts electricity, so if an electrical current were to meet the water while you're in there taking a bath, you would essentially be surrounded by a huge conductor.

4 0
2 years ago
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