胡雪8°

A solution is 0.20 M barium hydroxide. How many moles of nitric acid must be added to neutralize 100.0 mL of the solution?

what are the concentrations of all species present in 1.00M acetic acid at 20degree celcius ? (for HC2H3O2 Ka= 1.8x10^5)?

HELPPPPPP?

Calculate the heat change in joules for condensation of 7.90 g of steam at 100∘C.?

Find the volume of 0.130 M sulfuric acid necessary to react completely with 76.1 g sodium hydroxide.?

Calculate the pH of 310 mL of a 0.80 M aqueous solution of NH3 at 25 °C given that the Ka of NH4Cl is 5.6×10-10.?

A large bottle of water containing 825g of water at 9 degrees celsius. How many KJ's are absorbed to warm the water at 22 celsius room temp?

Find the moles in a buffer solution using a specified volume?

Find the domain and range of the function y= -3(x-1/3)^2+4/3?

What is the minimum mass?

PHYSICS HELP?

How much heat is produced by the complete combustion of 287 g of CH4?

Chemistry Help????

Where in the atom do we find protons, neutrons and electrons?

A buffer solution is formed by adding 0.200 moles of solid potassium nitrite, KNO₂, to 500.0 ml of 0.600 M Nitrous acid, HNO₂ solution?

What are the names of the following compounds?

Im not sure how to do this problem: What is the Mass in g of 3.53 moles of glucose (C6H12O6)?

General Chemistry help?

Cu(NO3)2 + NaOH?

Gravitational Force - Physics?

Te C−C−C bond angles in furan are much smaller than those in benzene. The likely reason is which of the following:?

Diprotic acids and pH?

Number of moles of acetylene in 52 g of acetylene gas? Number moles of water produced for each mole of acetylene used?

CHEMISTRY: Equilibrium Help (Acids and Bases-Diprotic Acid)?

A sample of an industrial waste water is analyzed and found to contain 42.4 ppb Fe3+.?

how Do I find the X and Y intercepts of this equation? X(t)= -5x^2+105x+100?

What is the average rate of the reaction during this time period?

f(z)=8z^2-18z+7 Evaluate f(9) and solve f(z)=33 Explain please, if possible.?

What is his gross annual income?

PHYSICS HELP?

What is the molarity of a 1.247 L solution that is made from 21.96 g of NaCl? Answer in units of M.?

precal help- circles?

Find the 600th derivative of f(x)=xe^(−x). Answer: f(600)(x)=?

ph question ?

Calculate the osmotic pressure of each of the following aqueous solutions at 20.00°C:?

pH problem?

A cleaning company found that 14 men took 6 h 40 min to clean a large warehouse.?

How many mols are present in 1.405 Kg of C2H5OH ?

zinc + copper oxide mixed makes?

Can you integrate sin^3(x)cos^3(x) dx this way...?

CHEM QUESTION!!?

How many grams of C are required to react with 11.8g of Fe2O3?

determine the volume of .235M sugar solution that can be prepared with .470 moles of sugar.?

Help with writing a balanced equation to show how ions can be removed by using sodium carbonate?

How many feet tall is 80 cm in inches and feet tall in height?

How many moles in 10kg of ammonium phosphate? -(NH4)3PO4?

what is the mechanism of this reaction hydrolysis of benzamide???

One boat tows another boat by means of a tow line, which is under a constant tension of 450 N. The boats move at a constant speed of?

The equation of the tangent line of a function f at (7, 5) is y =1/7x + 4. What is f '(7)?

How many grams of AgSCN(Ksp=5*10^-12) dissolve in a) 0,005M KSCN b) 2,3*10^-5 M AgNO3?