chemistry! URGENT

60,616 results, page 97

chemistry

If 37.0 mL of HCl is used to neutralize 25.0 mL of 0.09345M LiOH. What is the concentration of the acid

chemistry

I need the half reactions for this redox reaction: 2KClO3-----> 2KCl + 3 O2

chemistry

36.5g of hcl are dissolved in 180g of h2o. what is the mole fraction of the solute

Chemistry

636 grams of Na2CO3(s) are disolved in 3.0 liters of aqueous solution

chemistry

What causes a tip that allows us to see the precessional period in NMR?

Chemistry

How many milliliters of 2.00 M HCl(aq) are required to react with 7.55 g of an ore containing 36.0% Zn(s) by mass?

chemistry

what is the wavelength of the radiation absorbed when an electron move from n=2 to n=5 for a helium +1 ion?

chemistry

calculate the de broglie wavelength of He atom at 27 degree celsius & v=2.4*1000

Chemistry

Calculate the equilibrium constant, k a reaction with delta G= -32.5 kj/mol at 25 degrees C

Chemistry

What mass of AgI can be produced from a 0.512g sample that assays 20.1% ALI3?

Chemistry

need help to balance half reaction in basic solution IO3 to I2

Chemistry

Help? How many moles of LiF would be required to produce a 2.5 M solution with a volume of 10.5 L?

chemistry

what is the concentration of a 250 ml solution that contains 44 grams of magnesium fluoride

chemistry

how many grams of oxygen are required to burn completely 570g of octane?

chemistry

Dissolve 0.590/(mol)of citric,C-6-8H-O7),in 135(1Kg)of water.

chemistry

Dissolve 0.590/(mol)of citric,C-6-8H-O7),in 135(1Kg)of water.

chemistry

Dissolve 0.590/(mol)of citric,C-6-8H-O7),in 135(1Kg)of water.

Chemistry

What is the density of 3.40 Liters of Hydrochloric acid (HCl) that has a mass of 24.5 grams?

chemistry

The subject is stoichiometry. How many moles of NH3 can be produced from 12.0mol of H2 and excess N2?

chemistry

What mass of nitric acid, in grams, can be made from 113g g of ammonia?

chemistry

the density aniline c6h5nh2 is 1.02g/mL how many molecules are present in 1.00Lsample

chemistry

CAN NaOH(aq)+Co2 yield NaHCO3 PLEASE ANSWER DEEPLY!!!!!!!!!!!!!!!

Chemistry

What are the benefit of letting the solutions of HCl(aq) and NaOH(aq) sit overnight?

Chemistry

How many atoms of hydrogen are in a mixture of 3.49x10^23 molecules of H2O and 78.1g of CH3OH?

Chemistry

Calculate the number of phosphorus atoms in 17.0g sample of calcium phosphate

AP Chemistry

assuming a density of 1.0 g/mL, calculate the molarity and mole fraction of 3.0% h2o2

Chemistry

What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?

Chemistry

What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?

Chemistry

How many years will it take for 88g tritium to decay to an 11g sample?

Chemistry 12

Calculate the mass of K2CRO4 needed to make 3.00 L of a 0.0200 M solution.

Chemistry

Is boron trichloride a Giant covalent or Simple molecular substance?

chemistry

What mass of oxygen is needed for the complete combustion of 5.00×10−3g of methane?

chemistry -lab

what would be the percent yield if 2.2 grams of aspirin is formed?

chemistry

What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 7.9 g of Cl2

AP Chemistry

write an oxidation- reduction reaction for the reactants OCl- and S2O3-2

Chemistry

How many grams of NaCl are contained in 500ml of normal saline solution which is 0.85%(w/v).

chemistry

HI(aq)+KOH(aq)→H2O(l)+KI(aq) express this as a complete ionic equation

chemistry

How do you draw the structure of the reaction of 1-hexene with h2o in the presence of acid

chemistry

What is formed when zinc carbonate reacts with concentrated hydrochloric acid?

Chemistry

How could 2 molecular compounds react to create a precipitate and an aqueous solution?

Chemistry

Which of the following groups are indicative of anionic polymerization? a)F b)Cl c)COOCH3 d)H e)CH2CH3

CHEMISTRY BALANCING CHEMICAL EQUATION

H2SO4 + NaOC = Na2SO4 + H2O

Chemistry

I do not understand why this cannot go to equilibrium? Na2CO3(aq)+HCl(aq)->H2O(l)+CO2(g)+NaCl(aq)

Chemistry (DrBob222)

Is the relationship between delta G and Temperature inverse or direct?

Chemistry

What is [H+], [OH-], pH, and pOH for a 0.048mol/L solution of the weak benzoic acid, C6H5COOH?

chemistry

How can you convert the number of atoms of these isotopes 35Cl and 37Cl to percentage?

chemistry

how many grams of chromium are required to react with 125 mL of 0.75M CuSO4?

chemistry

What is the symbol equation of iron nails with copper sulfate solution.

Chemistry

A sample of NH3 gas occupies 75.0 liters at STP. How many molecules is this?

Chemistry

What would be the temperature change if 3.0g of water absorbed 15J of heat?

chemistry

if a coin with 3.0 cm diameter, 0.2 cm thickness weighs 10.377g, what are its volume and density?

chemistry

calculate the percentages by mass of the component element in sodium trioxonitrate(v)

Chemistry

What volume of oxygen at 25 degrees celsius and 93.5 kPa will use up 57.1 g of butane?

chemistry

3H2+N2=2NH3 if 2.70 g of H2 reacts with jugful of N ,how many grams of NH3 is formed?

Chemistry

Using the Krevzi method construct histidine and pyridoxine(Vitamin B6).

chemistry

how many grams of sodium oxalate, Na2C2O4, could be obtained from 213 g of C6H6?

analytical chemistry

How much NaOH (in grams) would there be in 0.25 litre of a 0.3M solution?

Chemistry

write a sentence for the following reaction PCl5(s)=PCl3(s)+Cl2(g)

chemistry

What is the molality of a solution composed of 28.4 g of methanol CH3OH and 250 g of water

Chemistry

How do I calculate moles from the given litres and mass of the substance (in grams)?

Chemistry

How do I calculate moles from the given litres and mass of the substance (in grams)?

Chemistry

The Maximum number of electrons that may occupy the third electron shell is A)2 B)8 C)10 D) 18

Chemistry

What atom is indicated by the following electron configuration. 1s^22s^12p^1 ?

Chemistry

Calculate [OH−] for 1.90mL of 0.190M NaOH diluted to 1.50L .

Chemistry

A solution has 189 grams of HNO3 dissolved in 1000L of water. What is pH?

Chemistry

How has crude oil changes the country (positive and negative points)

Chemistry

What would be the volume of 5.0 moles of gas at STP? Can you explain how to do it please?

chemistry

what volume of 1.5mols of tetraoxosulphate (iv) is needed to react with 2grams of calcium

Chemistry

How do I balance the following reaction in acidic conditions? N2O4 + S8 = NO + H2SO3????

chemistry

Molality is a unit of concentration that measures the moles of solute per

chemistry

What is (delta E) for the traansition of an electron from n=9 to n=4 in a Bohr hydrogen atom? What is the frequency? Thank you!

chemistry

how many grams of sodium metal are needed to give 781 g of hydrogen?

Chemistry

What is the concentration of hydronium ions in a solution that is 0.12 M HBrO(aq) and 0.160 M NaBrO(aq)?

Chemistry

I need to balance the equation of the reactants NaHCO3->CuCl2 please help me.

Chemistry

if the pressure read by the barometer is 0.882atm, what is the height of the column of mercury in cm?

Chemistry

The Ksp of manganese (II) hydroxide, Mn(OH)2 is 2.00x10^-13. Calculate the solubility of this compound in g/L?

Chemistry

What can be said about the presence of each of these groups of cations in the orginial solution

chemistry

how many moles of H2O are produced when 5.00 mols of oxygen gas are used

Chemistry

CIE and NIE for 2 K3PO4 + 3 Fe(NO3)2 = 6 KNO3 + Fe3(PO4)2

Chemistry

CIE and NIE for 2 K3PO4 + 3 Fe(NO3)2 --> 6 KNO3 + Fe3(PO4)2

Chemistry

he Ksp of mercury(II) hydroxide, Hg(OH)2, is 3.60 × 10-26. Calculate the solubility of this compound in g/L. I came up with x=2.8*10^-13

chemistry

write a reaction that show solid copper (II) nitrate dissociating.

chemistry

Hg2Cl2 = Hg + HgCl2 Please help me write the two half equations for this.

chemistry

In the reaction ZnO+2HCl=ZnCl2+H2O what is oxidized and what is reduced?

Chemistry

How many milliliters of 0.326 M HCl would be required to titrate 5.48 g KOH?

chemistry

How many grams of magnesium are required to produce a total of 4.05g of hydrogen

Chemistry

A 26.0 g sample of ice at -17.0°C is mixed with 124.0 g of water at 81.0°C. What is the equilibrium temperature?ºC.

Chemistry

How many atoms of each element are represented in the following: A.) 3NaCl B.) H2SO4 C.) 4H2SO4

Chemistry

Can alcohol dissolve any of these? PCl5 NaNO3 NH3 KOH KCl

Chemistry

Zn(s)+2HCl(aq) ->ZnCl2(aq)+Hx(g) How many millilters of 2.50M HCl(aq) are required to react with 3.95 of Zn(s)?

Chemistry

What are the Salts are taken into consideration in the calculation of the total alkalinity ????

chemistry

What are the products of the reaction between nitrous acid and strontium hydroxide?

Chemistry

Would it take more 0.1 M HCl or 0.1 M H2SO4 to neutralize 30 ml of NaOH?

chemistry

what will be the pressure of 0.010m of oxygen gas in a 4.5L flask at a temperature of 10,000C?

Chemistry

How many litters of Oxygen will be required to burn 3.8 liters of propane, C3H8?

chemistry

Calculate the amount of CO2 formed when 50 grams of CaCO3 decomposes?

Chemistry

How do i provide ionic equations , for example to this one --> HNO3(aq) + KOH(aq)

Chemistry

calculate the heat liberated when 15.0 g glucoseis metabolized to CO2 and H2O

Chemistry

How many kilojoules of heat are absorbed when 1.2 L of water is heated from 24oC to 86oC?

Chemistry

The temperature of a 2.25L sample of gas decreases from 45.0'C to 20.0'C. What is the new volume?

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