3 years ago

Which predictions can most likely be made?

Chemistry

2 answers:

Agata [3.3K]3 years ago

7 0

Answer:

C. Sb has a lower ionization energy and a lower electronegativity than I.

Explanation:

The chemical elements present higher ionization energy the higher and to the right of the periodic table they are.

Electronegativity usually increases from left to right over a period of the periodic table and from top to bottom in the groups.

pshichka [43]3 years ago

7 0

Answer:

Explanation:

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A chemistry teacher is able to grade chemistry labs at a rate of 5 labs for every 3 minutes. They need to grade 165 labs how man

PIT_PIT [208]

Answer:

1.65hr

Explanation:

Given parameters:

Number of labs = 5 labs

Time taken = 3 minutes

Unknown:

Time taken in hours to grade 165 labs = ?

Solution:

Let us find the rate of the teacher;

Rate = $\frac{number of labs}{time}$

Insert the parameters and solve;

Rate = $\frac{5}{3}$ = 1.67labs/min

Now;

Time to grade 165 labs = $\frac{number of labs}{rate}$

Time to grade 165 labs = $\frac{165}{1.67}$ = 98.8min

Since;

60min = 1hr

98.8min = $\frac{98.8}{60}$ = 1.65hr

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