3 years ago

Escape room ocean and air currents. Escape room

Chemistry

1 answer:

mamaluj [8]3 years ago

8 0

Answer:

1683

Explanation:

i did that game a few weeks ago preeeettyyyyyyyy sure that's the right number

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What belief do Deists hold about the universe?

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Did they scientist believe in God

Nataliya [291]

Answer:

some of them not believe in God

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A gecko used its sticky feet to crawl from the bottom of a window to the top of

sp2606 [1]

Answer:

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Transuranium elements are artificial and may be prepared by a fusion process in which heavy nuclei are bombarded with light ones

Scilla [17]

Answer:

$_{97}^{345}\textrm{Bk}$

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

Am has an atomic number of 95. So correct reaction is:-

$^{343}_{95}\textrm{Am}+^{4}_{2}\textrm{He}\rightarrow ^A_Z\textrm{X}+2^1_0\textrm{n}$

To calculate A:

Total mass on reactant side = total mass on product side

343 + 4 = A + 2

A = 345

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

95 + 2 = Z + 0

Z = 97

Hence, the isotopic symbol of unknown element is $_{97}^{345}\textrm{Bk}$

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4 years ago

Two colleagues are measuring the melting point of a substance. They observe two ranges of melting point, at 134-137 °C and 132-1

marissa [1.9K]

Explanation:

impurities affect both melting point and boiling point

in the case of melting point it lowers the melting point

so I guess one of the samples Ie contained impurities

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4 years ago