Ask question

Ask question

All categories

Dahasolnce [82]

2 years ago

10

Who was the first president of Jamaica

2 answers:

Lyrx [107]2 years ago

8 0

Sir William Alexander Clarke Bustamante.

Hope This Helps!

just olya [345]2 years ago

8 0

Sir William Alexander Clark Bustamante

You might be interested in

Calculate the mass in grams of each of the followinga. 5.94 x 10^20 H2O2 moleculesb. 2.8 x 10^22 SO2 moleculesc. 4.5 x 10^25 O3

ryzh [129]

Answer:

$0.0335\ \text{g}$

$2.978\ \text{g}$

$3586.84\ \text{g}$

$0.0026\ \text{g}$

Explanation:

Mass in grams is given by

$m=\dfrac{nM}{N_A}$

where

n = Number of molecules

$N_A$ = Avogadro's number = $6.022\times 10^{23}\ \text{mol}^{-1}$

M = Molar mass of molecule

Molar mass of $H_2O_2$ = 34.0147 g/mol

$n=5.94\times 10^{20}$

$m=\dfrac{5.94\times 10^{20}\times 34.0147}{6.022\times 10^{23}}\\\Rightarrow m=0.0335\ \text{g}$

Mass of $H_2O_2=0.0335\ \text{g}$

Molar mass of $SO_2$ = 64.066 g/mol

$n=2.8\times 10^{22}$

$m=\dfrac{2.8\times 10^{22}\times 64.066}{6.022\times 10^{23}}\\\Rightarrow m=2.978\ \text{g}$

Mass of $SO_2=2.978\ \text{g}$

Molar mass of $O_3$ = 48 g/mol

$n=4.5\times 10^{25}$

$m=\dfrac{4.5\times 10^{25}\times 48}{6.022\times 10^{23}}\\\Rightarrow m=3586.84\ \text{g}$

Mass of $O_3=3586.84\ \text{g}$

Molar mass of $CH_4$ = 16.04 g/mol

$n= 9.85\times 10^{19}$

$m=\dfrac{9.85\times 10^{19}\times 16.04}{6.022\times 10^{23}}\\\Rightarrow m=0.0026\ \text{g}$

Mass of $CH_4=0.0026\ \text{g}$

4 0

3 years ago

A gas is heated from 298 K to 367 K while its volume changes from 2.5 L to 3.9 L. If the initial pressure of the gas is 1.1 atm,

Gnesinka [82]

PV=nRT is the formula to use.

8 0

3 years ago

The reaction described in part a required 3.77 l of magnesium chloride. what is the concentration of this magnesium chloride sol

katrin [286]

Assuming you are talking about the atomic mass of magnesium chloride
M = n/V
M = 1/3.77
M = .265

6 0

3 years ago

Which one????? Please help me

Strike441 [17]

I believe it is C

The definition of wafting is: "<span>pass or cause to pass easily or gently through or as if through the air."</span>

6 0

3 years ago

What is the difference between Alkane and alkene.

nekit [7.7K]

Answer:

Alkanes are hydrocarbons (compounds containing only C and H) that have single covalent bonds joining the carbon atoms. ... Alkenes are hydrocarbons (compounds containing only C and H) that have one or more C=C double bonds (two C atoms are linked by 4 shared electrons).

Explanation:

4 0

3 years ago

Read 2 more answers