60,827 results, page 98
In the reaction ZnO+2HCl=ZnCl2+H2O what is oxidized and what is reduced?
How many milliliters of 0.326 M HCl would be required to titrate 5.48 g KOH?
How many grams of magnesium are required to produce a total of 4.05g of hydrogen
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.
How many atoms of each element are represented in the following: A.) 3NaCl B.) H2SO4 C.) 4H2SO4
Can alcohol dissolve any of these? PCl5 NaNO3 NH3 KOH KCl
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)?
What are the Salts are taken into consideration in the calculation of the total alkalinity ????
What are the products of the reaction between nitrous acid and strontium hydroxide?
Would it take more 0.1 M HCl or 0.1 M H2SO4 to neutralize 30 ml of NaOH?
what will be the pressure of 0.010m of oxygen gas in a 4.5L flask at a temperature of 10,000C?
How many litters of Oxygen will be required to burn 3.8 liters of propane, C3H8?
Calculate the amount of CO2 formed when 50 grams of CaCO3 decomposes?
How do i provide ionic equations , for example to this one --> HNO3(aq) + KOH(aq)
calculate the heat liberated when 15.0 g glucoseis metabolized to CO2 and H2O
How many kilojoules of heat are absorbed when 1.2 L of water is heated from 24oC to 86oC?
The temperature of a 2.25L sample of gas decreases from 45.0'C to 20.0'C. What is the new volume?
Is it possible to identify a metal in a fragment if you only know the specific heat?
Balance Redox using reactions by the 1/2 reaction method. NaIO3 (aq) + KI (aq) -->„³ I2 (s)
How long would it take to consume 13 mg of magnesium in 4.4 mL of 1.25 M HCl? Explain.
How long would it take to consume 13 mg of magnesium in 4.2 mL of 1.25 M HCl? Explain.
What is the Enthalpy of Decomposition of liquid Hydrogen peroxide (in kJ/mol)?
Redox reaction in assign oxidation number is ca3(po4)2
What is the molarity of a 28.9 g of CaCl2 dissolved in water to make up 0.78L of solution?
How would you prepare pure dry crystals of pottasium trioxonitrate (v) ?.
if an excess of nitrogen is reacted with 3.41 g of hydrogen, how many grams of ammonia can be produced?
the weight of one atom of uranium is 238 amu. its actual wt. is ......g
How many milliliters of NO2 at 25.2 °C and 738 torr are needed to form 16.1 g of HNO3?
What must be the velocity of a beam of electron if they are to display a de broglie wavelength of 1A°?
4g NaOH is dissolved in 100mL of 2.5M H2SO4 will be required for its complete neutralization?
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
Why can't we use water in electrolytic cell during producing aluminium ?
Is these two electrodes appropriate to create a good battery ? : Cd => Cd^+2 + 2e- and Fe => Fe^+2 + 2e- Explain
How much ethanol must be used to prepared 150 mL 10% by volume?
how to find a structure factor of a face centerd cubic lattice
What is meant by 0.2mol (12g) of glacial acetic acid how can we make ?
why can't the enthalpy of magnesium be measured using a coffee cup calorimeter?
Calculate the maximun=m mass of ethanol that can be made from 5.6 tonnes of ethen
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?
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!!!
Suggest why calcium compound produce a coloured flame but magnesium do not?
in a reversable reaction H2+I2=2HI,what will happen to the equilibrium if the volume is decrease?
principles behind the dilution and aliquoting of the NaOH solution
Discuss the difference in lattice enthalpy between NaCl and CsF
Nickel is about 2 millimeter thick or 2/1000 of a meter.how many nanometer is this?
why does alka-seltzer dissolve faster in hot than cold water
Calculate the number of moles of O atoms in a 2.5x10(-6)kg sample of C8H10N4O2
state the separation technique for silver choride and sodium trioxonitrate
What functional groups do uracil,guanine,cytosine, and tyrosine belong to.
Give a acid-base pairs which produce Na2CO3 as a salt
A 300mL solution was made by dissolving 5.0g of MgCl2 in water. What is its molarity?
Predict the physical properties and relative reactivity of Rb, Cs, and Fr (From the periodic table)
which is more reactive k or ca? ( from periodic table.) when poured in water?
How many numbers of oxygen molecules are present in 3 liters of CO2 at STP?
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?
How many grams of HCl are formed from reaction of 3.58g of H2 with 8.90g of Cl2?
Find the number of SiO2 formula units in m = 1.90g of quartz.
You need to make 500mls of a 7percent bovine serum solution
What mass KCl is needed to precipitate AgCl from 15.0 mL of .200 M AgNO3
advantage of potentiometric titration over other titrimetric titiration
How many molecules are in 105 g of sugar (C12H22O11)? Answer in units of molec
How much does 1.9 mol of carbon dioxide weigh? Answer in units of g
What is the volume occupied by 0.252mol of helium gas at 1.35atm and 305K ?
how many milliliters of10.0m Hc(aq) are needed to prepare 890.0 ml of 1.00m Hcl(aq)
We only can make ozone layer by adding 3 oxygen atoms or we cannot
Cs(s)+H2O(l)→ ? i thought it was H2+CsOH but the computer says that's wrong.
What is the molarity of a 2.50 x 102 cm3 solution containing 560.0 g of C6H12O6?
State the full electron configuration of a free nitrogen atom.
Give a structure to match the name for the following compound. 2-pentanol
How many moles of LiF would be required to produce a 12.0 M solution with a volume of 10.5 L?
At what temperature will freeze rastor 48.8 g of ethanol C2H5OH (Mr = 46) in dm3 of water (p = 1.86)
How many formula units would there be in a 54.3 gram sample of sodium nitrate
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?
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?
Balance the following equation in basic conditions CoCl2 (s) +Na2O2 (ag) ----> Co(OH)3 (ag)+Cl- (ag) + Na+ (ag)
What is the mass of a sample of (NH4)2SO4 that contains 8.01 x 10^24 atoms of oxygen
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
Draw all of the possible alkyne isomers of CH≡CCH2CH2CH2CH3.
Calculate the energy (kJ) required to raise the temperature of 22g of water from 12 C to 90 C.
0.195 m of ca oh 2 solution to neutralize 750 ML of a 0.235 m of hno3 and balance it
What is the pressure in a 22.1-L cylinder filled with 16.3g of oxygen gas at a temperature of 329K?
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.
What is the balanced chemical equation Shampoo? please i need a help ASAP!
cal culate the ph of a mixture of 100 ml distilled water and 2 ml of 2M of NaOH
The color of light emitted by a hot solid object depends on?
potassium hydroxide and perchloric acid net ionic question
sodium hydroxide and carbonic acid net ionic equation
'calculate the mass in amu of 2.879 1023 xenon atoms'
All polymers made from polyethylene will have the same density.
When the following equation is balanced, what is the coefficient for Ta? H2 + Ta2O3 → Ta + H2O
Most alcohols are very safe to ingest. True or False
When an acid and a base react in a neutralization reaction, the products will be acidic. T/F
By what factor is the rate of a reaction changed if an enzyme lowers the Ea by 9.0 kJ/mol at 37°C?
what mass of water is necessary to prepare 150.0g of 1.30% saline solution
What is product form when 2-bromobutane reacts with potassium cyanide in ethanol?
How would i calculate 2.34 mg x 10^6 divided by 3.50 kg
write a chemical reaction for lead2 nitrate + sodium iodide ->
Which alkyl halide should be used to prepare pent-2-ene and why?
calculate the mass of Pbl2 produced by reacting of 30.0g Kl with excess Pb( NO3)2
Calculate the mass of a 0.253-mL sample of a liquid with density 0.789 g/mL