First, we need to find the mass of
Algae reproduce asexually by a variety of spores such as , 1) Zoospores : these are flagelated , often with an eyespot. Normally these are formed under favourable conditions e.g....
1 Answers 1 viewsBefore doing any calculation, try to predict what you should see happen to the of the gas. Under the initial conditions for pressure and temperature, the oxygen gas had...
1 Answers 1 viewsThe idea here is that you can sue the mass of the empty flask and the mass of the filled flask to find the mass of water that can be...
1 Answers 1 viewsFind the volume of water added to fill the flask. $Density = (mass)/(volume)$ $Volume = (mass)/(density)$ $Vol (mL) = (18.52g)/((0.9970g)/(mL))$ $Vol (mL) = (18.52g)*((mL)/(0.9970g))$ $Vol (mL) = 18.58mL$...
1 Answers 1 viewsThis question involves the . The equation for the combined gas law is: $(V_1P_1)/T_1=(V_2P_2)/T_2$ The density of a substance changes with change in temperature. This is because the...
1 Answers 1 viewsThe idea here is that the of the gas tells you the mass of this gas that occupies exactly $"1 L"$ at some unspecified conditions for pressure and temperature....
1 Answers 1 views$"Number of moles"$ $=$ $(55.0*cancelg)/(44.01*cancelg*mol^-1)=1.25*mol$ Note that our mathematical expression was consistent dimensionally, the $g$ cancelled out, and $1/(mol^-1)=1/(1/(mol))=mol$ as required.
1 Answers 1 viewsThe molar mass of ascorbic acid is $"176 grams/mole'"$. This means that every $1$ mole of ascorbic acid will have a mass of $176$ grams. This can be mathematically...
1 Answers 1 viewsWe solve for $n$ and $n="Mass"/"Molar mass"$ $=$ $(PV)/(RT)$ And, $"Molar mass"$ $=$ $(RTxx"mass")/(PV)$ $=$ $(RT)/Pxx"mass"/V$ $=$ $(rhoRT)/P$ because $"mass"/V=rho="density"$ And thus, $"Molar mass"$ $=$ $(rhoRT)/P$ $(1.88*g*cancel(L^-1)xx0.0821*cancel(L)*cancel(atm)*cancel(K^-1)*mol^-1xx273.15*cancel(K))/(1.00*cancel(atm))$ Well, this gives...
1 Answers 1 viewsFirst write a balanced chemical equation for the reaction : $2H_2+O_2->2H_2O$ Since oxygen is in excess, it implies that hydrogen is the and will decide how much product is formed,...
1 Answers 1 views