# chemistry! URGENT

59,905 results, page 83

### 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

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

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

I need help with this question please help, I just don't understand it Fe3+ (aq), Ca2+ (aq) and Ba2+ are all present in the same solution. Fully describe a procedure whereby you could separate these ions from one another Mr Pursley posted this response, but I don't understand ...

### PHYSICS URGENT

dT/dz=−α forz≤11 km where α=6.5 K/km (Kelvin per km) and z is the height above the sea level. The temperature stays then approximately constant between 11 km and 20 km above sea level. Assume a temperature of 5 ∘C and a pressure of 1 atm at sea ...

### urgent!!

Summer Swimming Selection The municipal swimming pool in Nicetown has three different ways of paying for individual open swimming. Evan is trying to decide which way to pay. • Early Pay: Pay \$45 before Memorial Day; swim any number of days • Deposit Plus: \$20 deposit plus...

### chemistry

Hi. I have a little problem with my chemistry task. I have 4 unknown solutions: 1 light blue (A),1 green (B), 2 without colour (C & D). As I understood that the blue one is CuSO4, green one is NiCl2, but 1 uncoloured is NH3, then... A - CuSO4 [couldn't ir be Cu(OH)2?] B - ...

### Math

Can you please check my answers? Thank you! 18 out of 25 people love chocolate what percentage of people do not love chocolate? I got 28% 15% of the Chemistry class did not pass their chapter 7 test if the class has 38 students how many students did not pass their chapter 7 ...

### Chem

A carless chemistry student pours 200 grams of methanol, a flammable substance into the sink. Another careless chemistry student causes the bad situation to get even worse by dropping a lit match into the sink. The metanol burns completely with 300 grams of oxygen from the air...

### Chem

if the pressure was increased in this reaction : 2NO(g)+ O2 =====> 2NO2 <==== wouldnt the product side be favored? Please tell me if I'm right or wrong There are three volumes on the left, two on the right. If pressure is increased, the reaction to the right is favored. ...

### Chemistry

I got pH = 5.3 A 1.00 L buffer solution is 0.250 M in HC2H3O2 and 0.250 M in NaC2H3O2. Calculate the pH of the solution after the addition of 0.150 mol of solid NaOH. Assume no volume change upon the Additon o f NaOH. The Ka value for HC2H3O2 at 25 C is 1.8 x 10^-5. Chemistry-...

### Chemistry

how many electrons take part in redox reaction: Cl2 -> ClO3^-

### ap chemistry

What product is formed by this reaction: H2 + (CH)2 Answered the original post below.

### Science

Chemistry: What is the general formula for a chemical reaction? reactants >> products

### Chemistry

Why is water considered a universal solvent? It dissolves many, many common things.

### chemistry

What would the formula be for barium chloride dissolved in water? BaCl2(aq)

### chemistry

How can a mixture of liquids be separated? Fractional distillation. Read about that.

### Chemistry

Does fission store or create energy. answered the duplicate question.

### chemistry

How many moles in 10g of Cu(NO3)2 mols = grams/molar mass.

### Chemistry

Is it the second law of thermodynamics that provides a criterion for spontaneity? I don't think so yes

### Chemistry

What describes a molecule in which the positive and negative charges are separated? Dipole

### chemistry

Balance the following equation CH4+NH3+O2=HCN+H20

### chemistry

What are the acids and bases of the following salts? Na3PO4 PbS KIO3

### chemistry

How many ml of a .25M HCL would be required to neutralize completely 2.5g of NaOH

### CHEMISTRY

How do I use the distribution coefficient to find the amount of a substance extracted?

### chemistry

if a sample of cough syrup has the mass of 50.0g and a density of 0.950 what is the volume

### Chemistry

How do you know when to put roman numerals into formulas of binary compounds?

### Chemistry

What do i do when i have a question that ask to compare the size and density of an atom with its nucleus.

### chemistry

i nned to know the reason for crystal formation in magnesium sulphate salt.

### chemistry

what is the net ionic reaction for coppper(II)chloride and sodium hydroxide?

### Chemistry

If I wanted to get cubic picometers to centimeters, what would be the easiest way?

### chemistry

give the name of a solvent other than water for dissolving sugar?

### chemistry

what chemical properties of the nitrogenous bases contribute to stability of DNA?

### chemistry

At 1100 K, Kp = 0.25 for the reaction 2SO2(g) + O2(g) equilibrium with 2SO3(g) What is the value of Kc at this temperature?

### chemistry

the unit in which the quantity of heat energy is usually expressed is called the ?

### chemistry

what volume of 0.100 M NaOH will react completely with 28.00 mL of 0.550 M HCl?

### chemistry

why would h2s have a smaller bond angle (93.38) than scl2 (97.90)?

### chemistry

how can equivalence points of 2 titration curves not be in the same volume range?

### Chemistry

Convert each quantity to an amount in moles: a) 4.27 x 10^21 atoms of He b) 7.39 x 10^23 molecules of ICl

### chemistry

how do u set up the lewis structure for H30+? i know the available electrons is 3 but it has a +1 so it makes ir 2??

### chemistry

how many moles of Cl- ion in the solution containing 0.187g Cl- dissolved in 50.0 ml water.

### Chemistry

How do I figure out what element is it describibg if I am given the temperature the pressure and the g/L.

### Chemistry

Write the binary formulas for the compounds formed from the following ions: Na+, Cl-

### Chemistry

Why do ionic compounds conduct electricity when they are melted or dissolved in water?

### Chemistry

which must be a mixture of substances? 1. solid 2. liquid 3. gas 4. solution

### Chemistry

Can carbon monoxide leak (from a fireplace, barbeque, water heater)?

### Chemistry

Rank the ions in order of decreasing size. Sr2+, Ba2+, Cs Cs>Ba>Sr

### chemistry

do the resonance structures only apply for oxygen and double bonds?