micatkie

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[匿名]
回覆: 2
2017-01-17 1:37 am
What is the molarity of H+ in a solution formed by mixing 27.00 mL of 0.2445 M Ca(OH)2 with 110.00 mL of 0.1662M HCl?
[匿名]
回覆: 2
2017-01-16 2:16 pm
The mass of FeCl3•6H2O is 2.6033 and the mass of K2C2O4•H2O is 6.256. Which of these is the limiting reactant ?​?
[匿名]
回覆: 2
2017-01-16 12:06 am
chem help?
[匿名]
回覆: 2
2017-01-13 7:48 pm
What is the balanced chemical equation for the reaction used to calculate ΔH∘f of CaCO3(s) ? If fractional co?
[匿名]
回覆: 2
2017-01-13 3:21 pm
What is the final temperature of the part (°C)? ?
[匿名]
回覆: 2
2017-01-12 1:35 am
An aerosol can is empty, except for the propellant gas which exerts a pressure of 1.20 atm at 21 °C. If the ca?
[匿名]
回覆: 4
2017-01-11 1:12 pm
Use the reactions below and their equilibrium constants to predict the equilibrium constant for the reaction,?
[匿名]
回覆: 1
2017-01-11 11:22 am
The reaction 2 NO(g) + O2(g) --> 2 NO2(g) is important in forming smog. Under certain conditions, the rate law for a the reaction is?
[匿名]
回覆: 4
2017-01-11 10:08 am
why is it impossible to have a sample of methene?
[匿名]
回覆: 4
2017-01-11 12:49 am
A radioactive isotope has a half-life of 173 days. How much of a sample of 100 grams of the isotope would remain after 732 days?
[匿名]
回覆: 1
2017-01-10 6:28 pm
Analytical chemistry help?
[匿名]
回覆: 1
2017-01-10 1:39 am
Why is the acid + metal reaction to form a salt not always a suitable choice?
[匿名]
回覆: 2
2017-01-06 6:19 pm
how many grams are in 3.3 moles of potassium sulfide, k2s?
[匿名]
回覆: 2
2017-01-04 1:08 pm
Which liquid has stronger intermolecular forces?
[匿名]
回覆: 1
2017-01-02 5:42 pm
A 20g mixture of zinc and magnesium is reacted with a NaOH solution And 5.6 L of hydrogen can be obtained at STP?
[匿名]
回覆: 1
2016-12-27 3:05 pm
How does cerium conduct electricity?
[匿名]
回覆: 4
2016-12-14 12:01 pm
0.22g of a colourless oxide of nitrogen occupies 112 ml at STP. The compound is:?
[匿名]
回覆: 3
2016-12-13 7:59 pm
Can xylitol be organic?
[匿名]
回覆: 1
2016-12-13 9:29 am
Ozone absorbs energy with a frequency of 1.29 × 10^15 s^-1.a)the wavelength (in nm) of the absorption?c) the energy absorbed by one photon?
[匿名]
回覆: 1
2016-12-07 6:08 pm
If 400 g of water are produced from combustion of ethane, how many grams of thane reacted? and how to calculate.?
Jessica
回覆: 1
2016-12-07 5:11 am
Name the complex ion: [V(CN)_6]^2- [ZnBr_3(CO)]^- [Au(OH)_2(en)_2]^+?
[匿名]
回覆: 3
2016-12-05 6:43 am
Hi, Is this correct? Please explain why. Thank you soon much!?
[匿名]
回覆: 2
2016-11-27 3:21 am
0.2 moles of the chloride of a element U reacts with excess of silver nitrate to form 57.4g of silver chloride.The formula of Chloride is?
[匿名]
回覆: 1
2016-11-25 4:32 am
0.25M solution of pyridinium chloride was found to have a pH of 2.699. What is Kb for pyridine?
[匿名]
回覆: 1
2016-11-23 2:35 pm
Balance the half reaction for the reduction of NO2- to NO in acid solution NO2- gives NO?
[匿名]
回覆: 1
2016-11-23 5:15 am
If 0.025 mol of Cu is produced in the reaction, how many moles of electrons flow through the wire?
[匿名]
回覆: 2
2016-11-21 5:17 pm
The pKa of boric acid is 9.14. What is the Ka of boric acid?
[匿名]
回覆: 1
2016-11-18 7:28 am
How many water molecules were there in the hydrate?
[匿名]
回覆: 2
2016-11-16 5:13 am
A sample of gas has a mass of 0.565 g . Its volume is 119 mL at a temperature of 86 ∘C and a pressure of 749 mmHg?
[匿名]
回覆: 1
2016-11-09 4:08 pm
What is the boiling point of a solution made by mixing 100.0 g ZnCl2 with 700.0 grams of water (Kb for water is 0.512 oC/m)?
[匿名]
回覆: 1
2016-11-08 3:30 pm
If you are reacting SOCl2 with a molecule with a carboxylic acid on one end and an ester on the other, would would be the end product.?
[匿名]
回覆: 1
2016-11-04 8:28 am
What is the pH of a 0.0075 M solution of H2SO4 solution? Ka1 = 1.0x103, Ka2 = 1.2x10-2?
[匿名]
回覆: 1
2016-11-04 5:34 am
How many moles of P4 are needed to produce 3 moles of P2O5 using the reaction P4+5O2=2P2O5?
[匿名]
回覆: 1
2016-11-04 1:24 am
Percent yield question! chem check my answer please?
Angelique
回覆: 3
2016-11-02 10:46 am
Another Science Question!?
[匿名]
回覆: 1
2016-11-02 6:59 am
How much limestone in kilograms would be required to completely neutralize a 5.2×109 L lake containing 5.0×10−3 g of H2SO4 per liter?
[匿名]
回覆: 1
2016-11-02 4:28 am
Is y-4=3(x+1) an equation of a lone through (-2,1)? Explain.?
[匿名]
回覆: 1
2016-11-02 2:53 am
What is the minimum oxygen volume needed at STP for the complete combustion of 0.500 mol of this gas?
[匿名]
回覆: 1
2016-11-01 12:27 pm
How many mL of 0.126 M Na2CO3 would be needed to precipitate all of the copper ions in 24.4 mL of 0.163 M CuSO4? H?
[匿名]
回覆: 2
2016-10-26 8:56 am
my question is how can we convert the NITROGEN gas volume from nm3 to m3 ?
[匿名]
回覆: 2
2016-10-26 6:03 am
Calculate ΔHrxn CaO(s)+CO2(g)→CaCO3(s) given ΔH values: Ca(s)+CO2(g)+12O2(g)→CaCO3(s), ΔH= -812.8 kJ 2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ?
[匿名]
回覆: 1
2016-10-24 4:36 pm
73.0 mL of a 1.40 M solution is diluted to a total volume of 258.?
[匿名]
回覆: 1
2016-10-24 8:10 am
How many milliliters of 11.5 M HCl(aq) are needed to prepare 485.0 mL of 1.00 M HCl(aq)?
[匿名]
回覆: 1
2016-10-24 7:06 am
0.150 L of 0.470 M H2SO4 is mixed with 0.100 L of 0.200 M KOH. What concentration of sulfuric acid remains after neutralization?
[匿名]
回覆: 1
2016-10-24 6:34 am
What happens when chlorine is passed through cold dilute lime water ?
[匿名]
回覆: 2
2016-10-24 4:52 am
General Chemistry HELP!?
[匿名]
回覆: 1
2016-10-23 6:22 am
Chemistry Equilibrium?
[匿名]
回覆: 1
2016-10-21 3:04 pm
What mass of aluminum oxide and hydrogen iodide would be needed to produce 102g of aluminum iodide crystals?
[匿名]
回覆: 1
2016-10-21 1:38 am
How much iron is present in 7.94 g of iron(III) oxide (Fe2O3)?
[匿名]
回覆: 3
2016-10-21 5:19 am
what is the molarity of a solution that contains 2.38g of H2C2O4·2H2O in exactly 300mL of solution?
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