fooks

[匿名]

回覆: 1

2016-05-17 6:25 am

How many moles of FeSO4 are in a 275 mg tablet?

[匿名]

回覆: 2

2016-05-16 6:03 pm

Calculate the molality of each of the following solutions.?

[匿名]

回覆: 2

2016-05-12 7:47 pm

Calculate the number of moles of solute in 79.33 mL of 0.1455 M K2Cr2O7(aq).?

[匿名]

回覆: 1

2016-05-12 8:56 am

Solve a system of linear equations to balance the chemical equation Fe + O2 → Fe2O3?

[匿名]

回覆: 4

2016-05-11 7:32 am

[Trigonometry] Finding the value for cosine with given the value for tangent?

[匿名]

回覆: 1

2016-05-11 3:46 am

If you used 6.00g sodium bicarbonate how many moles of acetic acid could be fully reacted?

[匿名]

回覆: 2

2016-05-11 5:30 am

What is the chemical formula for titanium(IV) peroxide?

[匿名]

回覆: 2

2016-05-11 4:14 am

When a 1.25 g sample of MgCO3·xH2O is heated to remove all water, a mass of 0.759 g remains. Determine the value of x?

[匿名]

回覆: 2

2016-05-11 5:44 am

If a bacterial culture starts with 7000 bacteria and doubles every 20 minutes......?

[匿名]

回覆: 2

2016-05-11 5:36 am

2. Which of the following is the general term for the sequence a, -a, a, -a, . . .? A. a(-1)^(n - 1) B. (-a)^n C. (-1)a^(n + 1)?

[匿名]

回覆: 4

2016-05-11 5:03 am

Differentiate f (x) = sin^-1(x^4) Find the value of the derivative at x=1/3?

[匿名]

回覆: 1

2016-05-11 4:35 am

Chemistry HELP!?

[匿名]

回覆: 3

2016-05-10 12:52 pm

1M HCl滴定20ml未知濃度的NaOH 若完全中和用去HCl 30ml 則NaOH濃度為何?

[匿名]

回覆: 2

2016-05-10 4:05 pm

which of the following compound would you expect to have covalent bond c2o6 Na2O CsH ZnF2?

[匿名]

回覆: 2

2016-05-10 3:32 pm

Chemistry condensed structural formula of each of the following molecules?

[匿名]

回覆: 1

2016-05-10 3:12 pm

can someone right an equation for this reaction?

[匿名]

回覆: 1

2016-05-10 3:12 pm

If the hydroxide-ion concentration of a solution is 1.3 x 10-3 M, what is the [H+] in the solution?

[匿名]

回覆: 1

2016-05-10 3:17 pm

What are the half reactions for the redox FeBr2 + Br2 = FeBr3?

[匿名]

回覆: 4

2016-05-10 2:19 pm

Who can use half reactions to balance FeBr2 + Br2 = FeBr3?

[匿名]

回覆: 1

2016-05-10 2:52 pm

A sample of oxygen gas occupies a volume of 6.03 L at 52 °C and 0.891 atm.?

[匿名]

回覆: 1

2016-05-10 2:41 pm

How many liters of hydrogen are required to produce 2.8 liters of ammonia? N2(g)+3H2(g)-->2NH3(g) How many molecules of H2O are produced?

[匿名]

回覆: 1

2016-05-10 3:27 am

chemistry help? solution?

[匿名]

回覆: 1

2016-05-10 11:46 am

Chemistry help?

[匿名]

回覆: 2

2016-05-10 1:30 pm

What will be the pH of the solution?

[匿名]

回覆: 1

2016-05-10 12:29 pm

Concentration changes at equilibrium?

[匿名]

回覆: 1

2016-05-10 9:58 am

How to do this question.?

[匿名]

回覆: 1

2016-05-10 4:03 am

The hydronium concentration in a urine specimen is measured to 4.7 x 10⁻⁶ M. What is the pH of this sample?

[匿名]

回覆: 1

2016-05-10 4:04 am

Chemistry help?

[匿名]

回覆: 1

2016-05-10 4:17 am

Identify the following redox reaction and the oxidizing agent and indicate the oxidation and reduction half reaction?

[匿名]

回覆: 2

2016-05-10 4:17 am

What is the name of the hydrocarbon CH3(CH2)6CH3? butane decane octane propane?

[匿名]

回覆: 1

2016-05-10 4:44 am

It is found that a sample of magnesium oxide consists of 4.04 g of Mg and 2.66 g of O. Calculate the empirical formula.?

[匿名]

回覆: 1

2016-05-10 9:57 am

The number of particles in one mole of gas is q. What is the number of chlorine molecules in 35.5g of gaseous chlorine?

[匿名]

回覆: 1

2016-05-10 4:49 am

Chemistry Question?

[匿名]

回覆: 1

2016-05-10 5:05 am

A solution is made by mixing 86.5g of hno3 in water to make 2.3 liters.What is the concentration of hydroxide if the hydronium is .6m?

[匿名]

回覆: 1

2016-05-10 5:13 am

determine the pH of a solution of 0.11M HNO3 include equation, substitution, and answer?

[匿名]

回覆: 2

2016-05-10 5:31 am

Help me with this chemistry question?

[匿名]

回覆: 2

2016-05-10 5:41 am

Wes Welker's buret intially read 2.56 mL, the final reading was 24.56 mL. How much solution did he add?

[匿名]

回覆: 1

2016-05-10 5:58 am

How long will it take to electroplate 56.9 g of gold using a current of 2.0 A from a Au3+ solution?

[匿名]

回覆: 2

2016-05-10 8:12 am

Classify the following reactions as synthesis, decomposition, single-displacement, or double-displacement reactions.?

[匿名]

回覆: 1

2016-05-10 8:24 am

How do I draw monobromo products of n-propane?

[匿名]

回覆: 2

2016-05-10 8:17 am

Determine if each compound shown is soluble or insoluble.?

[匿名]

回覆: 1

2016-05-10 6:01 am

I need help with these Chemistry quoestions?

[匿名]

回覆: 1

2016-05-10 7:48 am

0.675 mol of K3PO4 causes complete precipitation of all of the calcium. How many moles of calcium were dissolved in the solution? mass?

[匿名]

回覆: 1

2016-05-10 7:46 am

ELECTROLYSIS PROBLEM-WRITE OVERALL EQUATION?

[匿名]

回覆: 1

2016-05-10 7:18 am

Chemistry help?

[匿名]

回覆: 1

2016-05-10 7:39 am

When iron rusts, solid iron reacts with gaseous oxygen to form solid iron(III) oxide. Write a balanced chemical equation for this reaction.?

[匿名]

回覆: 2

2016-05-10 7:25 am

Chemistry Half Life problem help?

[匿名]

回覆: 2

2016-05-10 7:22 am

Half-life problem help!?

[匿名]

回覆: 1

2016-05-10 6:03 am

Please help and if you can can you show the steps.?

[匿名]

回覆: 1

2016-05-10 6:11 am

Please help and if you can show the steps please.?