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IrinaVladis [17]
3 years ago
15

A compound containing oxygen and group 16 and/or group 17 elements contains one of the following elements. The compound dissolve

s in water. Which element does
the compound contain?
A. Magnesium
B. Potassium
C. Barium
D. Strontium
Chemistry
2 answers:
Igoryamba3 years ago
7 0
Pretty sure the answer is B
Sphinxa [80]3 years ago
3 0

Explanation:

pottassium  its one of covalent bond

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Carbon-14 naturally decay to carbon-_____.<br><br> 13<br> 12<br> 10<br> 15
lorasvet [3.4K]

Answer:

13 would be correct

Explanation:

4 0
3 years ago
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Westkost [7]
What is the question lol
7 0
4 years ago
Help Pleaseee!
bija089 [108]
Protons  + and electrons - must be equal

3 moles of C has a mass of 36, 3 moles of He is 12

so the answer is :
The carbon sample would have three times the mass of the helium sample

hope this helps
6 0
3 years ago
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What is the median of the following set: 2, 4, 6, 8, and 10?
labwork [276]

Answer:9

Explanation:

(3+8+10+15)/4 = 36/4 = 9

6 0
3 years ago
How many grams of ca(no3)2 can be produced by reacting excess hno3 with 6.33 g of ca(oh)2?
xeze [42]

Answer:

Amount of Ca(NO3)2 produced = 14.02 g

Explanation:

The given reaction can be depicted as follows:

Ca(OH)2 + 2HNO3 → Ca(NO3)2 + 2H2O

Since it is given that HNO3 is in excess, the limiting reactant is Ca(OH)2

Now, Mass of Ca(OH)2 = 6.33 g

Molar mass of Ca(OH)2 = 74 g/mol

Moles\ Ca(OH)2 = \frac{Mass}{Molar\ Mass} = \frac{6.33 g}{74 g/mol} =0.0855

Based on the reaction stoichiometry:

1 mole of Ca(OH)2 forms 1 mole of Ca(NO3)2

Therefore, moles of Ca(NO3)2 produced from the moles of Ca(OH)2 reacted = 0.0855 moles

Molar mass of Ca(NO3)2 = 164 g/mol

Mass\ Ca(NO3)2 \ produced = moles*molar\ mass \\= 0.0855\ moles*164\ g/mol = 14.02\  g

6 0
4 years ago
Read 2 more answers
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