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maw [93]
3 years ago
15

Draw and label Bohr model for B and CI in the space below

Chemistry
1 answer:
Nataliya [291]3 years ago
8 0

Answer:

The answer to your question is below

Explanation:

Boron = 5  atomic number

Chlorine = 17 atomic number

             

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How many calories are equivalent to 35 kilocalorie
GarryVolchara [31]
The answer is 35,000 calories
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3 years ago
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An acetaminophen suspension for infants contains 80 mg/0.80 mL. The recommended dose is 15 mg/kg body weight. How many mL of thi
omeli [17]
11 lb = 4.99 kg. 

So, 74.85 mg should be given to the infant. Thus 0.75 mL of the suspension should be given.
8 0
4 years ago
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Plz answer ASAP!
Alchen [17]
What types of atoms typically form covalent bonds?

The correct answer:

d) Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.

En example to explain:
An example of a covalent bonding: HCl -> 2 nonmentals
-> a difference in electronegativity less than 1.7:

EN(Cl) = 3.0 and EN (H) = 2.1 (you can search these values in a periodic table)
/\EN = 3.0 - 2.1 = 0.9

0.9 < 1.7

I hope this helped you out!
4 0
3 years ago
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All light rays parallel to the optical axis of a concave mirror are:
Alinara [238K]

Answer:

A. Refracted

Explanation:

Incident rays parallel to the optical axis are reflected from the mirror.

3 0
3 years ago
In a particular mass of kau(cn)2, there are 6.66 × 1020 atoms of gold. What is the total number of atoms in this sample?
Vinvika [58]

Total number of atoms in the sample is the sum of number of atoms of all the elements present in the sample.

Number of gold, Au atoms in KAu(CN)_2 = 6.66\times 10^{20} atoms     (given)

From the formula of compound that is KAu(CN)_2 it is clear that the number of potassium and gold are same whereas those of carbon and nitrogen are 2 times of them.

So, the number of atoms of each element is:

Number of potassium, K atoms in KAu(CN)_2 = 6.66\times 10^{20} atoms    

Number of carbon, C atoms in KAu(CN)_2 = 2\times6.66\times 10^{20} atoms = 13.32\times 10^{20}

Number of nitrogen, N atoms in KAu(CN)_2 = 2\times6.66\times 10^{20} atoms = 13.32\times 10^{20}

Total number of atoms in KAu(CN)_2 = Number of gold, Au atoms+Number of potassium, K atoms +Number of carbon, C atoms + Number of nitrogen, N atoms

Total number of atoms in KAu(CN)_2 = 6.66\times 10^{20}+6.66\times 10^{20}+13.32\times 10^{20}+13.32\times 10^{20}

Total number of atoms in KAu(CN)_2 = 39.96\times 10^{20} atoms

Hence, the total number of atoms in KAu(CN)_2 is 3.996\times 10^{21} atoms.

7 0
3 years ago
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