Chemistry

How many sigma bonds are in H20

2. O - H contains one sigma bond. There are two of those in the H20 molecule. Thus, there are two sigma bonds present.

What is the TOTAL ionic equation of Na2SO3 + 2HCl -> 2NaCl + SO2 + H2O

total, NOT net ionic thanks!-Since Na2SO3, HCl, and NaCl ionize, SO2 is a gas, and H2O is a liquid, we see that we can ionize Na2SO3, HCl, and NaCl to get: 2Na+ + SO3(2-) + 2H+ + 2Cl- ==> 2Na+ + 2Cl-

Multiple choice Equilibrium (Chemistry) question? Explain please

Consider a reaction at STP and at equilibrium. H2(g) + Cl2(g) 2HCl(g) Which change will result in an increase in the concentration of Cl2(g)? a. Decreasing the pressure on the system b. Decreasin

What does the  symbol mean in chemistry

I believe you are referring to the Ångstrom, a unit of measure invented by Anders Ångstrom (if I remember his first name correctly. One Ångstrom is equal to 10^-8 cm and is not an official SI unit, b

Chemistry question help !!

If NaCl has a solubility of 36.0gin 100gH2O at 20C, how many grams of water are needed to prepare a saturated solution containing 100g NaCl?-100 g H2O/36 g salt * 100 g salt = 278 g water

Identify: A) An element whose electron configuration ends in 2p

Identify: A) An element whose electron configuration ends in 2p? B) family of elements having 2 valence electrons? C) an element having a completely filled 3p orbital? D) Element having an unpa

Calculate the deBroglie wavelength of a shot gun pellet weighing 1.2 g moving with a velocity of 334.8 miles p

Calculate the deBroglie wavelength of a shot gun pellet weighing 1.2 g moving with a velocity of 334.8 miles per hour ? What units do I need to convert 334.8 to m/s?? Any help would be greatly appreci

Equlibrium Constant problem

Two known pollutants found in automobile exhaust can react with each other to produce two innocuous gases. NO(g)+CO(g) 1/2N2(g)+CO2(g) The equilibrium constant for this reaction at 800K is 10^32. Appr

What are the oxidation states of each element on each side of the equation? KCLO->KCL +1/2O2

Can someone explain how to determine oxidation states if the element is not by itself, please :)-KClO = potassium hypochlorite,the hypochlorite ion has an overall charge of 1-, K has a charge of 1+ K

Who discovered the Table of Elements

Dmitri Mendeleev and Perrie Curie-the table wasnt discovered it was made by mendeleev. he made the table based upon his experiments showing which elements had similar characteristics.look up mendeleev

Identify the substance that is oxidized and the substance that is reduced in the following reaction

Identify the substance that is oxidized and the substance that is reduced in the following reaction and identify the oxidizing agent and the reducing agent: Cl2 + 2 KI = 2KCl + I2-Cl2 + 2 KI --------

Calculate the mass of each of the following gas samples at STP

1. 5.85 L NO 2. 0.334 L N2 3. 138 cm3 Ar (All of these should in in grams(g))-Molar Mass NO = 14.01 + 16 = 30.01g Molar Mass N2 = 2(14.01) = 28.02g Molar Mass Ar = 39.95g cm^3 = 1 mL 1. 5.85 L NO

PH IN SCIENCE?????? help!!!!! plz

does anyone know how to give a pH rance in science. do you need to state a number?-well,after using your pH paper to test a solution you should look for something called a pH scale.the scale tells you

A balloon contains 0.121 mol of gas and has a volume of 2.73 L.

If an additional 7.2×10^−2 mol of gas is added to the balloon, what will its final volume be? Vfinal=_________ L-.121/2.73 = (.121 + 7.2 x 10^-2)/x .0443 = .193/x .0443x = .193 x = 4.36 L-you use th

How much K2PtCl4 must react in order to produce 74g of PtCl2(NH3)2

PART 1) The compound PtCl2(NH3)2 is effective as a treatment for some cancers. It is synthesized by the reaction shown in the equation: K2PtCl4(aq) + 2NH3(aq) -----> 2KCl(aq) + PtCl2(NH3)2(aq) How muc