4 years ago

How do scientists know that they have created a new element?

1 answer:

7 0

Answer:

Nuclear scientists continue to expand the periodic table as they detect new elements. ... Scientists create heavy elements by bombarding two lighter elements that together add up to the mass of the desired new element. One of the elements is stationary and thus called the target.

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Which of the following statements is true?

EastWind [94]

The first statement is False... as
For exothermic reaction :
A+B》 C+D + HEAT..(heat is considered as a product)... as for endo.. heat is a reactant.
So tjey can't be of the same energy...

2nd one...based on the
A+B》 C+D+HEAT...For exo reaction... the product have more Heat energy than potential...so its false
Recall...energy can nither be created nor destroyed but converted from one form to another....

The 4th one however is true for heat...the reactants have nore energy than the products..
A+B+HEAT》C+D

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3 years ago

Bainliest. Mole Conversion

Flauer [41]

Answer:

125g × 1 mol/16 grams = 7.81 × avogadros #

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3 years ago

When converting from moles to molecules OR molecules to moles you use what quantitative value?

miv72 [106K]

24 because it amen r amend

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3 years ago

The mass of an electron is about 9.11 × 10 -9 kg., write this whole number

Pepsi [2]

Answer:0.00000009

Explanation:

9.11 × （1/1000000000）=0.00000009

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3 years ago

If you subtract an objects starting velocity from its final velocity and divide by the time it took to change velocity, what are

amid [387]

Change in velocity over time is acceleration.

You're finding acceleration .

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3 years ago