Rubidium tetra cyanonickelate(II)

50 ml of 0.5 M NaOH solution is diluted to 200 ml find the molarity of new solution ?

write the chemical formula for diaquadibromoplatinum(IV) tetrabromoplatinate(II)

write the chemical formula of tetra ammine oxalatoiridate(III) ion

in a certain experiment, 6.0 g aluminum was reacted with an excess of bromine to yield 50.3g aluminum bromide. Calculate the theoretical and percent yields for this experiment?

what is the value of detla H for the reaction C4H4(g) + 2H2 (g) -----C4H8 (g) enthalpy of combution is given there

explain chagne in boiling point of water at mountains ?

Discuss why the food will cook faster in a sealed container that allows food to cook at higher pressures than the barometric pressure.

combustion of ammonia is represented by the equation.4NH3 (g) +7O2(g)-->4NO2(g) +6H2O(g ) delta H will negative

if 50.0 g of magnesium carbonate reacts completely with phosphoric acid, the grams of gas produced is?

How many grams of aluminum metal will react wtih 0.0500 mole of oxygen gas according to the equation given?

A 1.00 sample of NH4NO3 is decomposed in a bomb calorimeter . The temperature increase by 6.12 C . What is the molar heat of decompostion of ammonium nitrate

a student added calcium ion , Ca+2 an aqueous solution and observed formation of a precipitate addition of HNO3 had no effect on the precipitate.what anions was present in the original solution ?

The confirmation reactions for the halided involves the addition of chlorine water .Describe how you will know ,if any if the anions is present.

The confirmatory reactions that identify nitrate and nitrite both produce brown gas . What criterion will you use to determine which anion produced the gas ?

What is quantitative analysis ?

What is the heat capacity of 0.64 kg of water in J/oC?

The work done on a system for a certain adiabatic process is 73 J. What is ΔE in J?

How much energy in kJ is required to heat a calorimeter whose heat capacity is 534.9 J from 23.5oC to 68.2oC?

The temperature of the system is fixed. 635 J of heat are added to the system. What is the work in J done on the system?

1800 J of heat are added to a system. The surroundings do 4800 J of work on system. What is ΔE in J?

CALCULATE THE HEAT GIVEN OFF WHEN 159.7 OF COPPER COOLS FROM 155.0 DEGREE CELCIOUS TO 23.0 DEGREE CELCIOUS. THE SPECIFIC HEAT CAPACITY OF COPPER IS 0.385J/g.degree celcious

2200 J of heat are extracted from a system. The system does 7000 J of work on the surroundings. What is ΔE in J

If the radio waves trasmitted by a radio station have a frequency of 87.1 MHz, what is the wavelength of the waves in meters ?

what is the mass of 5.826 moles of Ca(OH)2

Arrange the following elements in increasing reactivity.Cs, Ca, CI

Please send Email at nirapendra.singh@gmail.com to get the answer

caclualte the heat change for the reaction of zinc with water Zn(s) + 2H2O -- Zn2+(aq) + 2OH-(aq) + H2(g)

The same quantity of energy added to 10.00 g pieces of gold , magnesium and platinum , all initially at 25 C . The molar heat capacities of these metals are 25.41j/mol C , 24.79j/mol C , and 25.95 j/mol C respectively

For the reaction H2(g) + 1/2 O2 -- H2O delta H = - 286 KJ/mol , calculate the enthalpy change when 2.80 g of water is produced ?

Ti4+ is a Lewis Acid. Explain How it forms H+ in solution.

Predict which element would be more reactive than calcium and yet have similar properties. A. Mg B. Ba C. K D. Y

Answer is B. Ba

an atop of hypothetical element of 31/15x consist of atom

The Atom is phosphorus represented by P 

its atomic mass is 31 and atomic number is 15

A helium balloon with a volume of 2.4 L contains 0.10 moles of gas at 25°C and 1 atm of pressure. The balloon leaks 0.02 moles of gas . What is the new volume of the balloon

Suppose that you have a 2.0 L sample of hydrogen at 1.00 atm and 59°C. If you heat the sample to 84°C and it expands to a volume of 3.7 L, what will the final pressure be

A sample of gas is heated. During the heating process, the volume of the gas increases 1.7 times. If the initial temperature of the gas is 80°C, what is the final temperature of the gas?

what will happen to the pressure of a gas in a container at constant temperature, if the volume of the container is changed to one-half its original size.

The pressure will increase to twice its original value.

In a manometer the mercury level at the open ed of the tube is 215 mm higher than at the closed end of the tube. If the atmospheric pressure is 1 atm, what is the pressure of the gas sample in units of torr?

Answer  :  975 torr

Which of the following shows a correctly balanced reaction in which cerium is reduced?

Ce4+ (aq) + Fe2+ (aq) --> Ce3+ (aq) + Fe3+ (aq)

suppose that the gas in a storage tank exerts a pressure of 55.125 lb/in2 . What is the pressure of the gas in units of torr?

Answer is 2850.0 torr

If the percent yield of iron is 78% when hematite (Fe203) is reduced in a blast furnace and 72% when magnetite (Fe3O4) is reduced, which ore (1000 kg) of reactant used?

, Freon-12 (CCl2F2) is prepared by the reaction: 3 CCl4(1) + 2 SbF3(s)-- 3 CCl2F2(g) + 2 SbCl3(s). If the percent yield is 72.0%, how antimony trifluoride (SbF3) must be reactedactual yield of 25.0 g of Freon-12.

The total number of atoms in one formula of nickel (III) nitrate is ?

what is quantum theory ?

use the following data to derive the rate law for the reaction, A+B ---C given data DR/dt = 0.24 , 0.48,0.96 [A] =0.1 ,0.2,0.1 [B] = 0.4 ,0.4,0.8

explain type of quantum number , principle quantum number , azimuthal quantum numbr , magnetic quantum number , spin quantum number

how much heat ( in j) is needed to change 95.7 g of water from 25 C to 98 C

N2 + 3H2 ------ 2NH3 if the rate of reaction of consuming of N2 is 0.25 mol per second , find the rate of reaction of forming NH3

how do you figure about polarity O2, Cl2, N2 area non polar because ,.. HCl, Co , NaH is polar because … CO2,CH4,C2H6 is nor polar because …. H2O ,NH3 ,H2S is polar because ……

balance the following reaction using half reaction method H2O2 + Cr207^2- --> O2 + Cr^3+

write net ionoic equation. indicate which oxidiesd and which reduced(use oxidation #) write oxidation and half reaction CU (s) + AgNO3 (aq) --- >Cu(NO3)2 (aq) + Ag (s)

A student wants to identify an oliy liquid . The student took 100 ml of water at 27.1 C and then added 20.0 g of the oily substance , which was at 4.2 C . The final temperature of the mixture was 24.7 C , what is the hear capacity of the unknown liquid ?

find reduction and oxidation half reaction occurs and net overall reaction for cell. the voltage. which way currfent flow Au/ Au 3+ Li+ (aq)/ Li (s)

A crime investigator has to find the identity of unknow solid with mass 52.8 g , temperature 100 C initial temperature 21.3C and final temperature 26.0 volume of water 90 ml dtermine the specific heat capacity of the unknown solid

how many grams of H3PO4 are produced from 10.0 moles of water (H2O) based on the reaction P4O10(s) + 6H2)(l) --> 4H3PO4(aq)

You have 29.785 g of lithium hydroxide and 121.481 g of aluminum perchlorate react according to equation g, what is the maximum amount of LiCIO4 you can make? 3 LiOH + AI(CIO4)3 ---- AI(OH)3 + 3 LiCIO4

given the balanced equation CH4 + 3Br2 -> 3HBr + CHBr3 if 146 grams of Br2 were used in the reaction and you produced 12.7 g of chBr3 , calcualate the % yield

How many grams are required to have 0.500 moles of C2H5OH ?