The answers are: 1) (b) 100 The patient requires 200 micrograms of tablet = 200*

Question

The answers are:

1) (b) 100

The patient requires 200 micrograms of tablet = 200*10-6 = 20*10-5 =20*10-3*10-2

But the doctor has by mistaken given 20 mg of tablet = 20*10-3

The factor by which the patient has overdosed is 100.

2) (b) 0.8 litres

The formula for density is density = mass / volume

So Volume = mass / density

here mass of oil is given as 640g and density of oil is 0.8g/ml

So now substituting the values of mass and density, the volume is

Volume = (640g) / (0.8g/ml)

Volume = 80ml = 80*10-3 litres = 0.8 litres

So the answer is 0.8 litres

3) (c) They are isoelectronic with each other.

Because they have sam electronic structure (electron arrangement).

4) (b) 8

Oxygen belongs to sixth group of periodic table, the number of valence electrons in equal to the group number. So oxygen has 6 valence electrons.

Explanation / Answer

Final Chem (03 Fall n If a prescription requires 200 g of vi tamin A per tablet and the the physician writes 20 mg by mistake. patient overdosed? what tactor is a: 10 .100,000 if the density of the oil is 0gaL? b. 100 c. 1000 d. 10,0oo . 2: What would be the volume in liters of 640 g of oil [a 800 liters (b 0.8 liter s) 512|iters ) 0.5liters ISoelecroic means sa number of electrons What do the following have in common? They are isotopes of each other. b) They are isomers of each other. 2 They are isoelectronic with each other They are different elements so they have nothing in common. . How many valence electrons does an oxygen atom have? . 16 The identity of an element is determined by...

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