chemistry! URGENT

60,378 results, page 48

Chemistry

Calculate the [h30+] in a 0.010M solution of Sr(OH)2

Chemistry

In a titration curve, how do i find the pH1/2??

chemistry

What is the net charge on Phe-Asp at each pH? a. pH 1 b. pH 7 c. pH 14

Chemistry

This volume of base and its corresponding pH is known as the______

chemistry

how can i find pH using scientific notation? 1*10^1 1*10^2

chemistry

plot (IO3) vs. reaction Time(s)

Chemistry

how many atoms of oxygen are present in 30 g of glucose

Chemistry

0.1 mol of HCl is added to 1 L of water. What is [H+] and [OH-]?

Chemistry

how many atoms of oxygen are present in 30 g of glucose

chemistry

balancing half reactions: ClO2^-1 --> Cl^-1

Chemistry

A solution of formic acid 0.20 M has a pH of 5.0. What is its Ka value? a) 5.0 x 10-10 b) 1.0 x 10-5 c) 5.0 x 10-5 d) 25

chemistry

how many times a proton is heavier than an electron

Chemistry

Propanoic acid has a Ka of 1.3 x 10^-5. What is the % ionization in a 3.0M solution?

Chemistry

Why do chloride ions increase corrosion?

Chemistry

Explain what causes pressure in a container.

chemistry

convert a pressure of 1.75 atm to kpa

chemistry

convert a pressure of 1.75 atm to kpa

Chemistry.

Is this formula (Fe2O3) iron oxide?

chemistry

how do i convert 2.23*10 22 formula units to moles?

chemistry

What is the wavelength of a photon that has an energy of E = 4.01×10^-19J ?

chemistry

How do I calculate the initial concentraion of an acid?

chemistry

what are all the names of the compound CH3OH?

chemistry

How do you calculate the theoretical cell voltage? 1) Zn|Zn^+2 | Cu|Cu^+2 2) Cu|Cu^+2 | Zn|Zn^+2 3) Fe|Fe^+2 | Cu|Cu^+2 4) Zn|Zn^+2 | Cu|Cu^+2 5) Cu|Cu^+2 | Cu|Cu^+2

chemistry

How to equation 7.9 = 7.21+log((0.105 -4.2x)/4.2x) ? What is the value of x?

chemistry

When do phase transitions occur in molecules?

chemistry

How many moles of compound are in 26.5g of Na2CO3 x 10H2O?

chemistry

difference between 2hcl and hcl

chemistry

calculate the percentage of FeSO4 in sample Y

chemistry

_mg(OH)†? + _H2SO4._mgSO4 + _H2O

chemistry

calculate the delta G rxn O2(g)+2 H2o(l)+2 Cu(s)--> 4 OH-(aq)+2 Cu^2+(aq)

chemistry

if 14.7g of na reacts with 7.9g og br how many grams of nabr are found

Chemistry

What is wrong with the names 2-ethyl-4 and 4-dimethylpentane?

chemistry

What is the rate of reaction when N2O5 equal 2.60×10^-2?

Science, Chemistry

What is the volume of 75.65 grams of zinc

CHEMISTRY

HOW MANY ATOMS 0.151 MOL OF LITHIUM?

Chemistry

How do “chemical” salts form? Thank you in advance.

chemistry

make 800 ml of .25 M sulfuric acid

Chemistry hnrs

what is the electron configuration of vanadium?

Chemistry

How many H atoms are present in 7.2g of propane, C3H8?

chemistry

is resistant to corrosion physical or chemical

chemistry

explain the term carbonate error ..

chemistry

why is nh3polar but bacl2 non polar

college-chemistry

How do you know when a base is weak or strong?

Chemistry

Why is the formula for sodium nitrate NaNO3?

chemistry

which element is liquid @ 25.0c and 1 atmosphere pressure?

chemistry

How many grams of Kl are required to prepare 500 mL of 0.04 M Kl?

chemistry

which temperature is colder: 50F or 50C???

chemistry

whats an example of hydrogen bonding?

Chemistry 011

what does Molar Mass mean?

chemistry

115g of copper that loses 2.48kJ

chemistry

How many moles of Fe2S3 are produced from a 0.4g piece of Fe?

chemistry

0.450mol of Na2S in 1.50L of solution

Chemistry

Which of the following is a negative ion? Na+1,Na,O-2,O? All of them?

Chemistry

Why do beryllium and flouine combine in a 1:2 ratio?

chemistry

How much in $ is one MOLE of pennies?

Chemistry

Most of the earth is made of what? Is it helium?

chemistry

how many moles of Nitrogen are in 80g of N2O?

chemistry

what happens in a condensation polymerization reaction?

Chemistry

Balance MgCO3 > CO2 + MgO

Chemistry

what is the mass in grams of 1.32 x 10^20 uranium atoms

chemistry

How many atoms are in 11 molecules of sulfur hexafluoride?

chemistry

what is the formula of iron III tannate?

chemistry

1. How many grams of NaCl are present in 15 mL of a 2.0% solution?

chemistry

What can cause high pressure inside a reactor?

Chemistry

how do you balance the equation with H3PO4(aq)and BaCl2(aq)?

chemistry

How is this equation balanced Al2(OH)3 S3 (s) + 3H2O (l) --->

chemistry

A sample of orange juice has a pH of 3.44. Its [H3O+] is

chemistry

Three oxyacids of phosphorus nd its structure

chemistry

salt spread on icy roads because

Chemistry

ÄSvap > 0 Give a molecular interpretation for

Chemistry

Describe how to make 500.0 mL of 3.6 M acetone

Chemistry

What quantum numbers specify these subshells? 2s n= l= 3p n= t= 6d n= l=

chemistry

The hybridization of the lead atom in PbCl4 is...?

chemistry

how can we find which kinetic energy is higher?

chemistry

How many moles of are needed to react with 0.460 ?

Chemistry

Which of the following will result in a chemical change?

Chemistry

find the volume of 56.4 g of a substance that has a density of 2.42 g/mL

chemistry

what elements follow the octet rule?

chemistry

What is pH of 0.1M solution of NH4Br, if the pKb of NH3 is 4.74?

Chemistry

How many moles of acid are there in 20 ml of a 2.0 M HCl solution?

chemistry

What role does RNA play in proteomics and why?

Chemistry

If pH = 6.6, calculate the molar concentration of H^ + (aq) in the solution.

Chemistry

560 mL of Xe will equal how many moles @ STP?

Chemistry

560 mL of Xe will equal how many moles @ STP?

chemistry

How many grams of solute are in 2.l L of 3.7Moles of Al(NO3)3

chemistry

Reaction between H2O2 +2NaOH

chemistry

why do beryllium and flourine combine in a 1 : 2 ratio ?

chemistry

Ca+NH3+Hcl will react to produce what?

chemistry

what is the molality of a solvent that is 0.15 degree celcius

chemistry

what is the pH of a 0.10 M solution of methylamine (CH3NH2, kb= 4.4*10^-4) at 25 degree C?

chemistry

what is the pH of a 0.10 M solution of methylamine (CH3NH2, kb= 4.4*10^-4) at 25 degree C?

Chemistry

What is the chemical breakdown of a cheese pizza

chemistry

Please help with the products: NaHCO3+H2SiF6= ????

chemistry

The number of moles in 15.39g of C2H6O?

chemistry

need to convert 5.26g/cm3 to m3

Chemistry Help

T=PV/nR P=0.96 V=0.045 n=0.002 g/mol R=0.082057

Chemistry

What's the lewis dot structure for CH2Cl2 ??

chemistry

How many osmoles are there in 6.00 ML of a 6.0 N mg3(po4)2 solution?

chemistry

0.0386mol glucose in 88.0ml of solution

chemistry

If we have a concentration of H+ at 1 x 10-1.2 mol/L, what is the pH value? A. -1.2 B. 0 C. 2.4 D. 1.2 A.

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