chemistry! URGENT

59,905 results, page 97

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?

chemistry

Is it possible to identify a metal in a fragment if you only know the specific heat?

Chemistry

Balance Redox using reactions by the 1/2 reaction method. NaIO3 (aq) + KI (aq) -->„³ I2 (s)

Chemistry II

How long would it take to consume 13 mg of magnesium in 4.4 mL of 1.25 M HCl? Explain.

Chemistry II

How long would it take to consume 13 mg of magnesium in 4.2 mL of 1.25 M HCl? Explain.

physical chemistry

What is the Enthalpy of Decomposition of liquid Hydrogen peroxide (in kJ/mol)?

chemistry

Redox reaction in assign oxidation number is ca3(po4)2

chemistry

What is the molarity of a 28.9 g of CaCl2 dissolved in water to make up 0.78L of solution?

Chemistry

How would you prepare pure dry crystals of pottasium trioxonitrate (v) ?.

chemistry

if an excess of nitrogen is reacted with 3.41 g of hydrogen, how many grams of ammonia can be produced?

chemistry

the weight of one atom of uranium is 238 amu. its actual wt. is ......g

chemistry

How many milliliters of NO2 at 25.2 °C and 738 torr are needed to form 16.1 g of HNO3?

chemistry

What must be the velocity of a beam of electron if they are to display a de broglie wavelength of 1A°?

chemistry

4g NaOH is dissolved in 100mL of 2.5M H2SO4 will be required for its complete neutralization?

CHEMISTRY

If 2.5 * 10^-2 g of Fe(NO3)3 added to 100mL of 1.0 * 10^-4 M NaOH solution , will it produce precipitate ? thank you

CHEMISTRY

Why can't we use water in electrolytic cell during producing aluminium ?

CHEMISTRY

Is these two electrodes appropriate to create a good battery ? : Cd => Cd^+2 + 2e- and Fe => Fe^+2 + 2e- Explain

Chemistry

How much ethanol must be used to prepared 150 mL 10% by volume?

chemistry

how to find a structure factor of a face centerd cubic lattice

Chemistry

What is meant by 0.2mol (12g) of glacial acetic acid how can we make ?

Chemistry

why can't the enthalpy of magnesium be measured using a coffee cup calorimeter?

Chemistry

Calculate the maximun=m mass of ethanol that can be made from 5.6 tonnes of ethen

Chemistry

What is dS (J/K) of the process when 0.5874 moles of H2 gas are compressed from 37.13 L to 29.13 L at constant temperature?

chemistry

how many mL or .0252M HNO3 are required to neutralize 25.00mL of .0148M of Sr(OH)2? and how did you get the answer!!!

Chemistry

Suggest why calcium compound produce a coloured flame but magnesium do not?

chemistry

in a reversable reaction H2+I2=2HI,what will happen to the equilibrium if the volume is decrease?

Analytical Chemistry

principles behind the dilution and aliquoting of the NaOH solution

chemistry

Discuss the difference in lattice enthalpy between NaCl and CsF

chemistry

Nickel is about 2 millimeter thick or 2/1000 of a meter.how many nanometer is this?

chemistry

why does alka-seltzer dissolve faster in hot than cold water

chemistry

Calculate the number of moles of O atoms in a 2.5x10(-6)kg sample of C8H10N4O2

chemistry

state the separation technique for silver choride and sodium trioxonitrate

Chemistry

What functional groups do uracil,guanine,cytosine, and tyrosine belong to.

Chemistry

Give a acid-base pairs which produce Na2CO3 as a salt

chemistry

A 300mL solution was made by dissolving 5.0g of MgCl2 in water. What is its molarity?

Chemistry

Predict the physical properties and relative reactivity of Rb, Cs, and Fr (From the periodic table)

Grade 9 Chemistry

which is more reactive k or ca? ( from periodic table.) when poured in water?

Chemistry

How many numbers of oxygen molecules are present in 3 liters of CO2 at STP?

Chemistry

If 6.0 g of Oxygen (O2) reacts with 12.0 g of hydrogen (H2) to give 5.0 g of dihydrogen monoxide. What's the % yield?

chemistry

How many grams of HCl are formed from reaction of 3.58g of H2 with 8.90g of Cl2?

CHEMISTRY

Find the number of SiO2 formula units in m = 1.90g of quartz.

Chemistry

You need to make 500mls of a 7percent bovine serum solution

Chemistry

What mass KCl is needed to precipitate AgCl from 15.0 mL of .200 M AgNO3

chemistry

advantage of potentiometric titration over other titrimetric titiration

chemistry

How many molecules are in 105 g of sugar (C12H22O11)? Answer in units of molec

chemistry

How much does 1.9 mol of carbon dioxide weigh? Answer in units of g

chemistry

What is the volume occupied by 0.252mol of helium gas at 1.35atm and 305K ?

chemistry

how many milliliters of10.0m Hc(aq) are needed to prepare 890.0 ml of 1.00m Hcl(aq)

chemistry

We only can make ozone layer by adding 3 oxygen atoms or we cannot

Chemistry

Cs(s)+H2O(l)→ ? i thought it was H2+CsOH but the computer says that's wrong.

Chemistry

What is the molarity of a 2.50 x 102 cm3 solution containing 560.0 g of C6H12O6?

Chemistry

State the full electron configuration of a free nitrogen atom.

chemistry

Give a structure to match the name for the following compound. 2-pentanol

Chemistry

How many moles of LiF would be required to produce a 12.0 M solution with a volume of 10.5 L?

chemistry

At what temperature will freeze rastor 48.8 g of ethanol C2H5OH (Mr = 46) in dm3 of water (p = 1.86)

chemistry

How many formula units would there be in a 54.3 gram sample of sodium nitrate

chemistry

If 124 g of ice at 0.0°C is added to 1.36 L of water at 90 °C, what is the final temperature of the mixture?

chemistry

Consider the reaction, 4 NH3 + 5 O2 => 4 NO + 6 H2O How many grams of NO will be made from 10.7 moles of O2?

Chemistry

Balance the following equation in basic conditions CoCl2 (s) +Na2O2 (ag) ----> Co(OH)3 (ag)+Cl- (ag) + Na+ (ag)

Chemistry

What is the mass of a sample of (NH4)2SO4 that contains 8.01 x 10^24 atoms of oxygen

Chemistry

What is the mole fraction of O2 in a mixture of 15.1g of O2, 8.16g of N2, and 2.46g of H2? (PLEASE EXPLAIN WHAT YOU DO!) Thanks

Chemistry

Draw all of the possible alkyne isomers of CH≡CCH2CH2CH2CH3.

Chemistry

Calculate the energy (kJ) required to raise the temperature of 22g of water from 12 C to 90 C.

chemistry

0.195 m of ca oh 2 solution to neutralize 750 ML of a 0.235 m of hno3 and balance it

Chemistry

What is the pressure in a 22.1-L cylinder filled with 16.3g of oxygen gas at a temperature of 329K?

Chemistry

What is the concentration of sodium phosphate contains 0.60 M Na+? I'm not sure what to do and how to figure how to do this question.

chemistry

What is the balanced chemical equation Shampoo? please i need a help ASAP!

chemistry

cal culate the ph of a mixture of 100 ml distilled water and 2 ml of 2M of NaOH

Chemistry

The color of light emitted by a hot solid object depends on?

chemistry

potassium hydroxide and perchloric acid net ionic question

chemistry

sodium hydroxide and carbonic acid net ionic equation

Chemistry

'calculate the mass in amu of 2.879 1023 xenon atoms'

chemistry

All polymers made from polyethylene will have the same density.

chemistry

When the following equation is balanced, what is the coefficient for Ta? H2 + Ta2O3 → Ta + H2O

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