A certain rock has a mixture of several different elements. It contains 33g of zinc, 22g of

Chemistry

2 answers:

11Alexandr11 [23.1K]3 years ago

8 0

Answer:

46.5%

Explanation:

mass of rock = 33g + 22g + 16g = 71g

% mass of zinc = (33/71) * 100%

= 0.465 * 100%

= 46.5%

patriot [66]3 years ago

6 0

Zinc is available in capsules, tablets, creams, ointments, and a liquid form. Adults aged 19 years and over who are interested in using zinc supplements should be careful to consume no more than 40 mg per day. Too much zinc can cause health problems.

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the atomic number of four elements p,q,r,s are 6,8,10 and 12 respectively. the two elements which can bond ionically are:

denis-greek [22]

Answer:

The atomic numbers of four elements A, B, C, and D are 6,8,10, and 12 respectively. The two elements which can react to form ionic bonds (or ionic compounds) are B (8= 2,6) and D (12 =2,8,2). So D donates its two electrons to B to fulfill their octet.

Explanation:

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2 years ago

Why is it important to use chemicals of high quality (purity) and exact(correct) concentrations in experiments?

Darya [45]

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