chemistry! URGENT

60,378 results, page 83

math or chemistry

Check pls. 5.4 x 10^-2 by 2.5 x 10^-3 by 7.9 x10^-3 m volume = 107.44 x 10^-8 m^3

Chemistry

How does hybridisation of PCL5 change when it is decomposed to PCL3 and Cl2?

chemistry

When are more products of a reaction available initially than at equilibrium? A. K = 0 B. Q < K C. Q = K D. Q > K

AP Chemistry

What should be the range for the exponent of [H+] in solutions that are characterized as acidic? A. 0 to -0.07 B. 0 to 0.7 C. 0 to -7 D. 0 to 7

ap chemistry

When are more products of a reaction available initially than at equilibrium? A. K = 0 B. Q < K C. Q = K D. Q > K

Chemistry

When are more products of a reaction available initially than at equilibrium? A. K = 0 B. Q < K C. Q = K D. Q > K

Chemistry

How many grams of ammonia are needs to produce 0.5kg of NH42So4

Chemistry

if I want to show the results of a nitrate analysis as nitrogen what is the equation

Chemistry

Is the flame coloration a test for the metal or for the acid radical?

CHEMISTRY

calculate the weight of co2 by complete combustion of 1.5 \g of ethane

Chemistry

What is the molar volume of pure water at 22 degrees Celsius?

chemistry

complete the equation for the reaction of the soap with magnesium chloride

Chemistry

Among the following electrons, which has highest energy? a. n = 3, l = 2, m = 0, s = + 1/2 b. n = 4, l = 0. m= 0 , s = - 1/2 Ans is A... but how A? Why nOt B?

chemistry

A sample on analysis shows 50% cao what will be the % of calcium carbonate in it

Chemistry

Please Write Out The Equation Of This Reation NaCO3XH2O

chemistry

calculate the normality of 4g of sodium hydroxide in 100ml of solution

chemistry

what is the type of catalyst that corresponds the use of the platinum wire

Chemistry

what is the energy if a photon of red light that has a wavelength of 8.90x10^-7

Chemistry

Gives isomeric compound of C3 H8 O woth IULAC names

Chemistry

Calculate the number of H Atoms present in 0.125 g CH3OH

chemistry

increasing order of boiling points of NO2, KCl and N2

Chemistry

How much heat is required to melt 110g of ice at-45°C?

chemistry

How many grams of potassium iodide, KI, are required to make 2.0 L of a 0.1M solution?

Chemistry

What mass of Cu(IO3)2 can be formed from 0.690g of CuSO4-5H2O?

Chemistry

Does group 18 elements like He, Ne, Ar, Kr soluble in organic solvents?

chemistry

HClO4 Express your answers as ions separated by a comma.

chemistry (charges)

just want to check if this group is neutral, R-NH2 thanks!

Chemistry

What is the frequency of light that is composed of photons that each has an energy of 5.20 × 10−25 J -Do I divide this by 3.00 X 10^8

Chemistry

What amount of naoh require to neutralize 1kg HCl

chemistry

Suppose 5 ∫ f(x)dx=6 ∫ 2 3 ∫ f(x)dx=1 ∫ 2 5 ∫ f(x)dx=4 ∫ 4 4 ∫ (6f(x)−1)dx= ? ∫ 3 help, please? I got the answer of 5, but it says its wrong

Chemistry

How many electrons in an atom could have these sets of quantum numbers? n=2 n=5, l=3 n=6, l=1, ml=-1

CHEMISTRY

CALCULATE THE OSMOLARITY OF THE FOLLOWING ).1M KNO3 & ).35M Na3PO4 & 0.35

Chemistry

5g of salt are dissolved in 200g of water,what mass of solution is this?

Chemistry

Why we add HCL ot H2SO4 during the experiment Of iodometry?

Chemistry

When We Balance Equations In Chemical Reaction,we Are Obeying The Law Of

Chemistry

How many mL of 0.100 M NaOH are required to neutralize (or titrate) 25.0 mL of 0.15 M H3PO4?

Chemistry

How many milliliters of 2.3 M NaOH are needed to neutralize 4.2 mL of a 5.4 M H2SO4 solution?

chemistry

Please help: How do you prepare 2 L of formate buffer pH=3.14 (c=0.05mol/l) (pk=3.74). THEY WANT THE VOLUMES THANKS

chemistry

what are atoms of nitrAogen with different numbers of neutrons called?

Chemistry

what are atoms of nitrogen with different numbers of neutrons called?

chemistry

CH3-C(triple bond)C-CH-C2H5-CH3product a and product b

chemistry

CH3-C(triple bond)C-CH-(C2H5)CH3product a and product b

Chemistry

what compound is the result of silver nitrate and potassium bromide

chemistry

Hi, I was wondering why is there white smoke when nh4cl and ca(oh)2 is being heated. Thanks!

Chemistry

Is this a valid equation? NaNO3 + H2O = NaOH + HNO3 Why or why not?

chemistry

Hello, Is nano3 + h2o -> naoh + hno3 correct?

Chemistry

calculate number of moles of NH3 if 8g of H2 reacts in excess N2

chemistry

writing blanced decomposition formula of Ammonium Carbonate

chemistry

Calculate pH of 6ml of 3M HNO3 diluted to 18 litres of water

Chemistry

How many moles of carbon are in a 28.0g sample? I have no idea where to start

Chemistry

How many kcal are needed to raise the temperature of 120 g of water from 15°C to 75°C?

Chemistry

What volume is occupied by 100 g of air at room temperature (d = 1.20 g/L)?

Chemistry

What are at least 2' real world uses of colligative properties?

Chemistry

which compound shows small change in solubility from 0°C to 100°C?

chemistry

How can we separate a mixture of iron filings and sodium chloride

Chemistry

Find the number of miles of calcium chloride 0.44g

Chemistry

Writing balanced chemical reaction of K2CO3 (s) and HCl (aq) ???

college chemistry

How many grams of NaCN are needed to react with 50.0 g of MgCl2?

Chemistry

what is the relative atomic mass of a silicon containing ore with 92% 28'Si,5%29'Si and 3%30'Si?

chemistry

What is the name of the acid produced when CO2 reacts with water?

Organic Chemistry

What is the literature value for the partition coefficient for caffeine?

chemistry

calculate the mass at 15.0 L at NH3 at 27 digree Celsius and 900 mm hg?

chemistry

How do you rationalize an infrared spectrum of salicylic acid and aspirin? How do you know which is which?

chemistry

How do you rationalize an infrared spectrum of salicylic acid and aspirin? How do you know which is which?

Chemistry

3.65 g of HCl are dissolved in 2lit of the solution find the polarity

Chemistry

Sup fam, why is SO2 a stronger reducer than Cr3+?

Chemistry

What is the energy of a photon in J emitted by the transition from the ni = 4 to the nf = 2 of a hydrogen atom?

Chemistry 151

Calculate the concentration in g/dm3 of HNO3 in solution A. (H=1; N=14; O=16; Na=23)

Chemistry

Which type of polyethylene has no side chains? A) LLDPE*** B) HDPE

Chemistry

Calculate the amount of H2 produced from the reaction of 4.25 grams Zn and 25 ml of 3.0 M HCL.

Chemistry

is the flame coloration a test for the metal or for the acid radical?

Chemistry

Calculate the amount of H2 produced from the reaction of 4.25 grams Zn and 25 ml of 3.0 M HCL.

chemistry

ozonolysis with orthoxylene gives 3 different products explain

Chemistry

Estimate the value of deltaGf for COCl2(l) at 25 degrees celcius

chemistry

Augmentin sf give 5ml for 5 days,how many ml and what strength will you issue?

Chemistry

to prepare 50.0 g of 10% NaNo3 solution you will need how many grams of solute

chemistry

If the students added hcl instead of tetraoxosulphate(Vi)acid

chemistry

explain why benzoic acid do not affect litmus paper

chemistry

How change in humidity and temperature effects the rate of evaporation

chemistry

Why does honey diffuse in water at a slower rate than ink

chemistry

How to prove that sodium hydroxide is a base with the help of an equation for the reaction

Chemistry

How many kilograms of NH3 are needed to produce 1.00×10*kg of (NH4)2SO4?

Chemistry

Find the ratio of rate diffusion of SO2,O2, CH4?

Chemistry

Which atom is most likely to form a 2+ ion? Zn, Al, S, Na, N, cannot be determined

Chemistry

What is more acidic from [CuCl4]^(-2) and ethanoic acid? And what is the reason?

Chemistry

The Ksp of manganese(II) hydroxide, Mn(OH)2, is 2.00 × 10-13. Calculate the solubility of this compound in g/L.

Chemistry

How are the three types of intermomecular forces similar? How are they different?

Chemistry

If the percentage of water of crystallization in MgSO4.xH2O is 13% , then what is the value of 'X'.

Chemistry

Does LiAlH4 perform any kind of a reaction with a triple bond?

Chemistry

Do Ozone gas decomposite naturally under IR rays?

chemistry

what substances can affect a waters boiling point? please help

chemistry

Match the elements to form ionic compounds. please help Cl Na Mg O Be S Li F

chemistry

how many valence electrons are shared, gained, or lost in nitrogen?

Chemistry

Which of the following is an element? A. CI2 B. H2O C. HCI D. NaCI

chemistry

How many sig figs do i write down for this: (2.06/5.999)+156.5?

Chemistry

Is the number of water molecules associated with each Al2(SO4)3

Chemistry

Calculate the pH of 175.0 mL of H2O following the addition of 0.57 mL of 1.39 M NaOH

CHEMISTRY

copper with seven neurons more than its atomic number

CHEMISTRY

CONC.OF NO2^-AND H3O^+IN A SOLUTION IN WHICH 4.5% OH HNO2 WAS IONIZED

chemistry

How to prepare 0.5m of HCL using 500ml standard flask

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