Roger the Mole

[匿名]

回覆: 1

2016-10-20 5:05 pm

HOW to Calculate the following quantities?

[匿名]

回覆: 2

2016-10-18 2:15 am

What mass of lead(II) chromate, can be produced by the addition of excess sodium chromate to 25 ml of 0.493 M solution of lead (II) nitrate?

[匿名]

回覆: 2

2016-10-18 2:09 am

A 0.389g sample of KHP will be titrated with NaOH solution with an assumed concentration of 0.100 M.?

[匿名]

回覆: 1

2016-10-18 1:06 am

What is the empirical formula of the compound?

[匿名]

回覆: 1

2016-10-18 1:03 am

What is the empirical formula of the compound?

[匿名]

回覆: 1

2016-10-17 6:38 pm

Chemistry Equation Question?

[匿名]

回覆: 2

2016-10-14 4:01 pm

3km to 300m?

[匿名]

回覆: 2

2016-10-14 3:55 pm

what source releases nitrogen oxides into the atmosphere?

[匿名]

回覆: 1

2016-10-13 4:15 pm

Calculate the molality of each solution.?

[匿名]

回覆: 3

2016-10-12 6:02 pm

Calculate the concentration of the chemist's working solution.?

[匿名]

回覆: 1

2016-10-11 10:26 pm

Transmitting Tower in North Dakota from a point on level ground 5280 feet 1 mile from the base of the tower the angle of elevation is 22.9?

[匿名]

回覆: 1

2016-10-10 8:58 pm

What's sp. Heat capacity of a metal?

[匿名]

回覆: 2

2016-10-07 11:04 pm

Help calculating with a calculator?

[匿名]

回覆: 1

2016-10-06 5:24 pm

What is the freezing point of a solution that contains 25.8g of NaCl dissolved in 100g of water?

[匿名]

回覆: 1

2016-10-06 5:23 pm

What is the boiling point of a 1.45 m solution of glucose (C6H12O6) is water?

[匿名]

回覆: 4

2016-10-02 6:58 pm

to a solution you have added hydrogen ions to reduce the pH by 1. By how much has the concentration of hydrogen ions been changed?

[匿名]

回覆: 3

2016-10-01 4:30 am

Hello help with science about sodium metal used in light experiment?

[匿名]

回覆: 2

2016-09-29 2:10 am

A student recovered 0.676 g of elemental tin from a solution sample containing 1.483 g of SknxCly.?

[匿名]

回覆: 1

2016-09-29 2:13 am

Chemistry help PLEASE! 10 points!!! THANK YOU SO MUCH!!!?

[匿名]

回覆: 1

2016-09-29 2:05 am

Based on the empirical formula Cu1Cl4 complete and b alance the following equation. ___Al(s)+___ (aq,blue)=___AlCl3(aq)+___Cu(s)?

[匿名]

回覆: 1

2016-09-22 12:39 am

Hydrochloric acid and barium chloride molecular, total ionic, and net ionic?

[匿名]

回覆: 1

2016-09-22 12:18 am

Potassium chromate and sodium carbonate...molecular, total ionic, net ionic.?

[匿名]

回覆: 1

2016-09-20 11:00 pm

Half life question?

[匿名]

回覆: 1

2016-09-20 7:32 pm

Organic Chem help!?

[匿名]

回覆: 1

2016-09-13 2:16 am

Factor -(x+h)^2?

[匿名]

回覆: 4

2016-09-12 6:57 am

What happens when you mix iron (III) chloride and potassium thiocyanate?

[匿名]

回覆: 1

2016-09-10 8:51 pm

Mass Balance Help?

[匿名]

回覆: 1

2016-09-08 6:14 pm

In lab you calculate the density of an iron rod, based on msas and volume data, to be 7.30 g/cm3.?

[匿名]

回覆: 2

2016-09-07 9:02 pm

What is the exact difference between miscible and soluble? As alcohol is soluble and carbonyl compounds are miscible in water.?

[匿名]

回覆: 2

2016-08-31 6:10 pm

How does one determine whether to use an acidic or basic solution for balancing redox reactions?

[匿名]

回覆: 1

2016-08-21 3:26 am

0.0467 mol of an unknown element weighs 5.54 g. Identify the element.?

[匿名]

回覆: 2

2016-08-11 3:51 am

How toxic is the lithium contained within rechargeable lithium ion batteries to a human?

[匿名]

回覆: 1

2016-08-11 2:28 am

A frickin' lithium battery exploded in my tiny room when I was in it, and I was wondering how my health would be at risk in multiple ways.?

[匿名]

回覆: 3

2016-08-08 4:51 am

Calculate the concentration of all ions present in 0.262 g AlCl3 in 250.0 mL of solution. __M Al3+ __M Cl-?

[匿名]

回覆: 3

2016-08-05 4:37 am

a solution with a ph=3.0 has ____ the hydrogen ion concentration of a solution with a ph=6.0 a. 1/100 b. 1/10 c. 10 d. 100 e. 1000?

[匿名]

回覆: 2

2016-08-03 3:59 am

When sodium compounds are heated in a bunsen burner flame they emit light at a wavelength of 5890 Å.?

[匿名]

回覆: 1

2016-08-03 4:00 am

If a 1.68-g sample of witherite were to react completely with 24.6 mL of 0.2558 M HCl,?

[匿名]

回覆: 1

2016-08-03 3:13 am

Calculate the M of the resulting solution if enough water is added to 50 mL of 4.2 M NaCl solution to make a solution with a volume of 2.8L?

[匿名]

回覆: 1

2016-08-01 7:45 pm

What is the poorest conductor of hear from the following?

[匿名]

回覆: 2

2016-07-31 10:19 pm

Flask A: 1 mole of Ar in a 2 L flask at 25°C. Flask B: 1.5 moles of H2 in a 1 L flask at 25°C Which flask has more molecules? Justify.?

[匿名]

回覆: 3

2016-07-30 8:32 am

2 AuCl3 + 3 Cu → 2 Au + 3 CuCl2 is this a redox reaction?

[匿名]

回覆: 2

2016-07-25 2:46 am

A weak base is a compound that is essentially ionized in aqueous solution.?

[匿名]

回覆: 1

2016-07-20 6:07 pm

Find an equation of the parabola that has a focus at (6,7) and a vertex at (6,6?

[匿名]

回覆: 4

2016-07-18 5:21 am

stuck on this hess's law question?

[匿名]

回覆: 2

2016-07-17 8:58 pm

Thermochemistry question.?

[匿名]

回覆: 2

2016-07-13 6:26 pm

1 mole of potassium chlorate on heating thermally decompose and excess of aluminium is burnt.How many moles of aluminium oxide are formed?

[匿名]

回覆: 2

2016-07-11 8:40 pm

why is carbon so important to biochemistry?

[匿名]

回覆: 1

2016-07-11 6:48 pm

Give 4 examples of indicaters and tell what they indicate?

[匿名]

回覆: 1

2016-06-26 12:29 am

The initial internal energy of a system is 53.5 kJ. It performs 2.8 kJ of work and absorbs 6.9 kJ as heat. What is its final internal energy?

[匿名]

回覆: 5

2016-06-25 12:12 pm

how we distinguish CH3CH2OH and CH3OCH3?