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artcher [175]
3 years ago
7

What is the mass of flourine-19

Chemistry
1 answer:
Arisa [49]3 years ago
7 0
18.998403

Explanation:
The internet told me
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Please help and thank you
Assoli18 [71]
Im pretty sure it's d
8 0
3 years ago
If i were to visit mystery island in january would i have to bring an umbrella?
Nitella [24]
Yes, you would have to bring an umbrella because if the island is named mystery you never know when it'll rain. 
3 0
3 years ago
Calculate the number of oxygen atoms in a 80.0 g sample of scheelite (CaWo).
castortr0y [4]

Answer:

Explanation:

scheelite is CaWO₄

Mol weight = 288

80 g of scheelite = 80 / 288 = 27.77 x 10⁻² moles

27.77 x 10⁻² moles of scheelite = 27.77 x 10⁻² x 6.02 x 10²³  molecules of scheelite

= 167.17 x 10²¹ molecules of scheelite

1 molecule of scheelite contains 4 atoms of oxygen

167.77 x 10²¹ molecules of scheelite contains 4 x 167.77 x 10²¹ atoms of oxygen .

= 671.08 x 10²¹ atoms of oxygen .

= 671 x 10²¹ atoms .

3 0
3 years ago
The amino acid Prolinehas a pk1 of 1.99, pk2 of 10.60. The amino acid Serine has pk1 of 2.21 and a of pk2 of 9.15. If these two
Elza [17]

Answer:

a) overall charge will be neutral.

Explanation:

The Ph value for Pro will be neutral and neutral charge on the Ser. Molecules of atoms generally have neutral electrical charge. If the overall charge of a peptide is negative then it is considered as negative. Pro and Ser amino acids have neutral Ph values.

5 0
3 years ago
The reactive properties or chemical behavior of an atom mostly depend on the number of
Kryger [21]
The reactive properties or chemical behavior of an atom is mostly dependant on the number of electrons in the outer shell
7 0
3 years ago
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