purplegrasshopper691

What is the correct name for N2O5?

I put dinitorgen pentaoxide but it was wrong. How is it wrong when they are both nonmetals?

Liquid hexane CH3CH24CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 65. g of hexane is mixed with 62.4 g of oxygen. Calculate the minimum mass of hexane that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits.

4. 100.0 g of hexane accidentally spills into 1.00 L of water. Generally speaking, hexane and water are immiscible and can easily be separated. However, the solubility of hexane is reported to be 0.0011 g hexane per 100 mL of water at 25 oC. What mass of hexane will dissolve in the water?

Naturally occurring cobalt consists of only one isotope, 59Co, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt, 60Co, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.7310 g sample of cobalt has an apparent "atomic mass" of 58.9901. What is the mass of 60 Cobalt.

In part A of the experiment you will need to make a 4.80 x 10-4 M KSCN solution starting with a 2.00 x 10-3 M KSCN solution. You will be making up the solution in a 25.00 mL volumetric flask and using 0.5 M HNO3 as the diluent. What volume of 2.00 x 10-3 M KSCN will you need?

The presence of which of the following molecules indicates that the cell has sufficient energy reserves?

A) ATP
B) Actyl-CoA
C) ADP
D) Fructose-1,6-biphosphate
E) Both A and B are correct

When solving problems involving stoichiometric coefficients, the first step is to make sure you have a balanced chemical equation. Then, you determine the limiting reagent by using the coefficients from the balanced equation. You can keep track of the amounts of all reactant and products before and after a reaction using an ICF table (as shown in the Simulation). Completing the ICF table will also allow you to determine the limiting reagent, and the amount of product formed is based on assuming that the reaction runs to completion with 100% yield. Parts A and C explore these steps in more detail. Let us consider another reaction. Ammonia and oxygen react to form nitrogen monoxide and water. Construct your own balanced equation to determine the amount of NO and H2O that would form when 3.49 mol NH3 and 5.86 mol O2 react.

After mixing 45.27 grams of ammonium phosphate and 63.84 grams of calcium chlorate, you measure that 28.47 grams of a solid product are formed from the experiment. What is the percent yield of this experiment? Propose a possible explanation of why your actual yield differed from the theoretical yield of the experiment.

Which of the following statements about organic chemistry is correct? Be careful, there may only be one word incorrect. View Available Hint(s) Which of the following statements about organic chemistry is correct? Be careful, there may only be one word incorrect.

A. In a condensed structural formula, each carbon atom and its attached hydrogen atoms are written as a group in linear form.

B. The different arrangements of alkanes, known as conformations, are the three-dimensional rotation around the double bond.

C. Alkanes are a type of organic compound that have at least one multiple bond between two carbon atoms.

D. Organic compounds only contain carbon and hydrogen.

calculate the percent composition by mass of each element in LiClO2.

If the oceans became acidic, they would start to ________.

A.absorb more CO2, which would make them even more acidic

B. release more CO2, which would make them even more acidic

C. absorb more CO2, which would raise the pH

D. release more CO2, which would raise the pH

Cholesterol is an important lipid that has numerous roles in the body. 1) It serves as a precursor molecule for what other important biomolecules? 2) What is one negative ramification of too much cholesterol in the body?

3.What is the true mass of water if the measured mass in the atmosphere is 5.397 4 g? When you look up the density of water, assume thatthe lab temperature is (a)15OC and (b)25OC. Take the density of air tobe 0.001 2 g/mL and the density of balance weights to be 8.0 g/mL.(2)

How many moles of ethanol are formed from 2 mil of sucrose 

1. How many moles of ethanol are formed from 2 mol of surcose

Calculate the molarity of each of the following commercial acid or base solutions: (a) 70.0%HClO4, specific gravity 1.668, (b) 69.0%HNO3, specific gravity 1.409, (c) 85.0%H3PO4, specific gravity 1.689, (d) 95.0%CH3COOH, specific gravity (acetic acid), specific gravity 1.059, (e) 28.0%NH3, specific acid 0.898. (Assume density and specific gravity are equal within three significant figures).

Calculate the atomic mass of silicon's three isotopes.

Which element in the third period is best represented by the six successive ionization energies: IE1 = 737 IE2 = 1450 IE3 = 7731 IE4 = 10 545 IE5 = 13 627 IE6 = 17 995 ?

When an ion with 20 protons and 18 electrons bonds with an ion with 8 protons and 10 electrons they form the compound?

What is the structure of 3-isopropylhexane?

1. CH3-C=CH + Cl2---->

What masses of sodium chloride, magnesium chloride, sodium sulfate, calcium chloride, potassium chloride, and sodium bicarbonate are needed to produce 1 L of artificial seawater for an aquarium? The required ionic concentrations are [Na+] = 3.16 M; [K+] = 0.0085 M; [Mg2+] = 0.0667 M; [Ca2+] = 0.0127 M; [HCO3−] = 0.0022 M; [Cl−] = 3.20 M; [SO42−] = 0.0627 M.

Pieces of molecules that have one or more electrons available for bonding are:

a. Radical   

b. Reactants 

c. Neutrons 

d. Protons

How many moles of ethanol are formed from 2 mol of sucrose?

Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compound gives the following percent composition by mass: C: 44.4 percent, H: 6.21 percent, S: 39.5 percent, O: 9.86 percent. Calculate its empirical formula. What is its molecular formula given that its molar mass is about 162 g?

Which concept was demonstrated by Rutherford's gold foil experiment?

a sample containing 1.00 ×10 mg iron - 59 is stored for 135 days.  what mass of iron - 59 will remain at the end of the storage period?

How many vanadium atoms are contained in 158 kg of vanadium?

What is the chemical formula for copper(I)persulfate?

Ethylene oxide (C2H4O) is a high-volume chemical intermediate that is used to produce glycol and polyethylene glycol. Ethylene oxide is produced by the partial oxidation of ethylene (C2H4) on a solid catalyst in a fixed bed reactor: C2H4 + 1/2O2 ? C2H4O. A portion of the ethylene reacts in an undesired reaction to form carbon dioxide and water: C2H4 + 3O2 ? 2CO2 + 2H2O. The product gas leaving the reactor has the following water-free composition: 20.5% C2H4O, 72.7% N2, 2.3% O2 and 4.5 % CO2. Determine the % excess air (based on the desired reaction) and the lb/hr of ethylene feed required to produce 100,000 ton/yr of ethylene oxide.

Based on the information given, classify each of the pure substances as elements or compounds, or indicate that no such classification is possible because of insufficient information. Analysis with an elaborate instrument indicates that substance A contains two elements. substance B and substance C react to give a new substance D. substance E decomposes upon heating to give substance F and substance G. heating substance H to 1000 ∘C causes no change. substance I cannot be broken down into simpler substances by chemical means. substance J cannot be broken down into simpler substances by physical means. heating substance K to 500 ∘C causes it to change from a solid to a liquid.

What is oxidized in this reaction? Fe(s)+HCl(aq)--> FeCl3(aq)+H2(g)

What is the correct formula?