3 years ago

What trend in atomic radius do u see as you go a group family on the periodic table?

2 answers:

exis [7]3 years ago

7 0

Atomic radius increases down a group

6 0

What trend in the atomic radius do you see as you go a group family on the periodic table ... it increases

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vaieri [72.5K]

Answer:

5.50g (corrected to 3 significant figures)

Explanation:

mass = no. of moles x molar mass

molar mass of CO2 = (12.0107 + 15.999x2) =44.0087

Therefore, mass = 0.125 x 44.0087

= 5.50g (corrected to 3 significant figures)

8 0

3 years ago

ryzh [129]

Kelvin = celsius + 273 so...
0 = C +273
-273 = C
some people use 273 or 273.15 just depends on the teacher.

3 0

4 years ago

Misha Larkins [42]

Measure out the ingredients first

7 0

3 years ago

Lelu [443]

5.50M NaOH must be added to 680.0 mL of a buffer, The amount of NaOH is mathematically given as

V=2.107mL

<h3>What is the volume of 5.50M NaOH?</h3>

Generally, the equation for Chemical Reaction is mathematically given as

CH3COOH+OH^{-} ⇄ CHCOO^{-} + H2O

Therefore

pka=-log(1.8*10{-5})

pKa=5-0.25527

pKa=4.3447

Hence

$pH=pKa+log\frac{CH3COO}{CH3COOH}\\\\0.75=4.7447+log\frac{0.01564+x}{0.01428-x}$

x=0.0115898

Volume of NaOH

V=0.0021072L

V=2.107mL