4 years ago

Which best describes a neutralization reaction?

Chemistry

1 answer:

Softa [21]4 years ago

3 0

A reaction between to acids

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Which scientist was the first to use the telescope in astronomy? Copernicus Newton Kepler Galileo

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The scientist that was the first to use the telescope in astronomy was Newton

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3 years ago

How many atoms are there in 4.13 moles of nickel (Ni)

Rudik [331]

Answer:

2.48626 x 10^24

Explanation:

We multiple 4.13 by avogadro's number to get that.

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4 years ago

The air inside a hot-air balloon is heated to 59.00 °C (Tinitial) and then cools to 39.00 °C (Tfinal). By what percentage does t

Mama L [17]

Answer:

6.1%

Explanation:

Assuming pressure inside balloon remains constant during the temperature change.

Therefore, as per Charles' law at constant pressure,

$\frac{V_1}{T_1} =\frac{V_2}{T_2}$

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Percentage change in volume

$\%\ change\ in\ volume=\frac{V_1-0.939V_1}{V_1} \times 100\\=6.1\%$

Change in volume of the balloon is 6.1%

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3 years ago

You weigh two different objects on the same scale in the same location on Earth. The weights are different. What must be differe

timofeeve [1]

They can be differnt shape or one must weight more then the other one

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3 years ago

Read 2 more answers

1. Which statement describes the earliest model of the atom?

zloy xaker [14]

Answer:

A). An atom is an indivisible hard-sphere.

Explanation:

The 'Atomic Theory' of Dalton is characterized as the earliest model(came in 1803) which described the atoms as the indivisible and resistant spheres. He used the example of watermelon to elaborate that the atoms of a specific element share similar characteristics and the atoms of distinct elements differ in their mass as well as their size. Thus, option A is the correct answer.

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3 years ago