Answers edited by Manish Bhardwaj
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How would you calculate the molar mass of water?

Question #23843

What is a neutral atom?

What is x if #4x+3/x9=5#?

How can we identify dependent variables?

How do you determine how far Doris can travel is Doris’s truck gets #10 \frac{2}{3}# miles per gallon and her tank has #5 \frac{1}{2}# gallons of gas?

What are some examples of compounds?

How many moles are in 45.0 sample of #MgO#?

What is the concentration of lead ions and sulfide ions in a saturated solution of lead sulfide (#PbS#) solution at 25°C?

What is the mass of 5.99 mole of carbon monoxide?

Question #25589

How do you simplify #(x + 4)  2(x + 5)#?

How do you multiply #2/7 \cdot 3.5#?

What are some examples of ionic formulas?

How does mass number relate to the particles in the atom?

According to Avogadro's law, as the number of moles of gas increases, what happens to its volume?

How do you evaluate the expression #((3x+x)/y)# when #x=4# and #y=2#?

What is the equation for finding the equilibrium constant for a chemical reaction?

How do you find the quotient of #(4x^2 – y^2) ÷ (2x – y)#?

A gas occupies 11.2 liters at 0.860 atm. What is the pressure if the volume becomes 15.0 L?

How does heat affect the phases of matter?

Question #ada60

Can someone explain how to do this?
Consider the following equation: 2ZnS(s) + 3O2(g) > 2ZnO(s) + 2SO2(g), ΔH° = –878.2 kJ.
What is the enthalpy change when 223.9 g ZnS(s) reacts in excess oxygen?

How many grams of Na2O are required to produce 1.60 x 102 grams of NaOH? Na2O + H2O > 2 NaOH

What is stoichiometry?

Question #e293b

Question #162a7

What is the percent composition of a compound with the empirical formula #MgCl_2#?

How do you solve for a if #F=7 1/3# and #m=1/5# given Newton's second law states the #a=F/m# where a is the acceleration, F is the form, and m is the mass?

What is the total number of oxygen atoms on the lefthand side of #2Ca_2(PO_4)_2(s) + 4SiO_2(s) + 12C(s) > 4CaSiO_3(s) + P_4(s) + 12CO(g)#?

How do you determine the length of each of the ribbons if Nadia takes a ribbon that is 48 inches long and cuts it in two pieces where one piece is three times as long as the other?

How do you simplify the expression #3xx+4#?

Question #5bc49

How do you calculate entropy change?

A 40.0 L tank of ammonia has a pressure of 8.00 atm. Calculate the volume of the ammonia if its pressure is changed to 12.0 atm while its temperature remains constant.

How can I calculate the moles of a solute?

How many grams of solid calcium hydroxide, Ca(OH)2, are required to react with 350 mL of 0.40 M HCl? __HCl + __Ca(OH)2 __CaCl2 + __H2O

How do you simplify #6 + (x  5) + 7#?

A sample of O2 under 2.00 atm occupies 500 ml at 25.0˚C. What pressure will the sample have at 0.0˚C ?

Question #b7af7

Can you find the number of moles of Argon in 607 grams of Argon?

How do you mulitply #2 1/3 xx 5 2/4#?

What is the correct formula of an ionic compound containing Fe2 and PO43 and how is it called?

How do you solve for t in #2/7(t+2/3)=1/5(t2/3)#?

Why the total mass of reactants and of product not change in a chemical reaction?

If you have 21 moles of gas held at a pressure of 78 ATM and a temperature of 900 k, what is the volume of the gas?

Question #52b92

Oxygen gas is at a temperature of 40°C when it occupies a volume of 2.3 liters. To what temperature should it be raised to occupy a volume of 6.5 liters?

What is the formula for Magnesium Triiodine? I think it is Mg(I3)2 but wanting to confirm.

How can I write the formula for calcium nitride?

If the reaction of 20.7 grams of CaCO3 produces 6.81 grams of CaO, what is the percent yield?
CaCO3=>CaO+CO2

Question #1847d

How do you calculate mole fraction of solute?

Why are endothermic reactions useful?

How can I write the formula for strontium fluoride?

How many moles are present in 1.21 X 10^24 molecules of HBr?

Question #df3c0

If the half life of an unstable element is 5000 years, what percentage of the parent material will be left after 10000 Years?

What mass of carbon dioxide is produced from the complete combustion of #8.50*10^3# #g# of methane?

How can the formation of a solution be exothermic or endothermic?

Question #e484d

How does solubility change with temperature for gases?

How can enthalpy change be determined for an aqueous solution?

Question #f4231

How do you calculate mole fractions?

What is the product of #3/5xx5/12#?