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lora16 [44]
3 years ago
7

What do engineers use to test their designs of new technologies?

Chemistry
2 answers:
Alchen [17]3 years ago
6 0
B. models is the answer
erica [24]3 years ago
4 0
The answer Fam is B) Models
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In a laboratory investigation, an HCl(aq) solution with a pH value of 2 is used to determine the molarity of a KOH(aq) solution.
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Answer:

blue

Explanation:

KOH is a base therefore it's pH will be above seven. According to table M when tested with the indicator bromcreeol green The solution will turn blue

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The melting point of aluminum is 660ºC. At what temperature will aluminum melt if you have 5 grams? 10 grams? Explain your answe
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the melting point of aluminum is 660 degrees Celsius.

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Which type of force occurs between two objects at a distance?
agasfer [191]

Answer:

Gravitational force of attraction.

Explanation:

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This means that as the distance between the bodies is increases, the gravitational force between the bodies decreases and vice versa.

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The atomic number is the numbers of protons

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