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3 years ago

13

Does Silicon-32 has a half-life of 170 years and can be used to find the age of rocks it is contained in.

1 answer:

ioda3 years ago

8 0

Silicon-32's half-life is actually 710 years.

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Perform the following operation

jolli1 [7]

Answer:

coefficient green : 2.4865

exponent (yellow) : 16

Explanation:

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3 years ago

Is distilled water ionically bonded

evablogger [386]

Yes it is.. because

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3 years ago

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20 pts. I am making holiday cookies and the recipe says that it will make 48 cookies. After eating some raw cookie dough I bake

Nikitich [7]

Check the attached file for the answer.

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3 years ago

How many atoms are in a sample of 175 grams of sodium (na)? 1.42 × 10^27 atoms 4.58 × 10^24 atoms 6.68 × 10^-21 atoms 1.26 × 10^

Alenkasestr [34]

Atomic mass Na = 22.99 u.m.a

22.99 g ------------------ 6.02x10²³ atoms
175 g -------------------- ?? atoms

175 x (6.02x10²³) / 22.99 => 4.58x10²⁴ atoms

hope this helps!

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4 years ago

How many grams are in 4.5 x 10^22 molecules of water? please show dimensional analysis

GaryK [48]

Answer:

1.1grams

Explanation:

Find moles of water:

4.5x10^22/(6.02x10^23)=0.07mol

Find molar mass of the water

O=16.00g/mol

0.07x 16.00=1.1 grams

4 0

3 years ago