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Calculate the number of moles of P4 if a sample has the 52.0g of elemental phosphorus, P4. Explain and show how you solved this.
Calculate the volume collected to STP conditions? Calculate the density (g / L) of the gas at STP conditions?
Write the equation for the gas-phaserxn of nitrogen dioxide with ammonia by using the whole number of coefficients to form the nitrous oxide and water vapor.
Determine how many electrons are essential to construct a charge of -0.90 C? Calculate the mass of this many electrons?
If in a "coffee cup" calorimeter the 0.050 mol of hydrochloric acid, HCl is mixed with the 0.050 mol of sodium hydroxide, NaOH, then the temperature of 50.0 g of the resulting solution increases fro
The standard enthalpy of atomization of an element is the energy needed to convert 1 mole of an element in its most stable form at 25 centigrade to 1 mole of monatomic gas.
In an excited state an electron in a hydrogen atom can return to the ground state in two different ways: first, through the direct transition in which a photon of wavelength λ1 and secon
Someone investigating the properties of solutions having the carbonate ions organized a solution having 5.728g Na2CO3 in a flask of volume 250ml and some of the solution was transferred to a burette
The 13.5m ladder is leaning against wall. Determine distance d ladder goes up wall if ladder makes the angle of 35*29' with horizontal.
Dioxane (C4H8O2) has an enthalpy of fusion of 145.8 J g-1 and its melting point temperature is 11.0 degrees Celsius. At 11.0degrees Celsius into liquid dioxane calculate how much heat is needed to
The medicinal thermometer commonly required in homes can be read to +/-0.1 degrees F, whereas those in the doctor's office may be accurate to +/- 0.1 degrees C.
Create the sketch of graph as you analyze function. Give the table of values which will justify graph according to asymptotes.
Determine the number of atoms are contained in one unit cell of metallic tungsten if it forms a face centered cubic unit cell?
Radium-226 has a half life of 1600years, which undergoes alpha decay. Determine the numbers of alpha particles are emitted in 5 min by a 10 mg sample of Radium-226?
What percent of the crude molecules contain the sulfur, supposing that each molecule can contain either zero or one sulfur atom?
Write all possible rational roots for function h(x)=6x^4-5x^2+12. Determine maximum number of real zeros which function can have? Why?
Phosphorite is a mineral that contains Ca3(PO4)2 plus other non-phosphorous-containing compounds. Find out the maximum amount of P4 that can be formed from 1.0 kg of phosphorite if the phosp
At 760 mm Hg a solution of glycerol (C3H5(OH)3) in the 937 g of water had a boiling point of 104.7 degrees Celsius. Determine how much of glycerol is in the solution?
Explain what will be the concentration of ethanol in % v/v if a 250 mL solution of ethanol in water is prepared with 4mL of absolute ethanol.
Do you think you could carry 2.80 cubic ft? If the gold has a density of 19.3 g/cm3, Explain how many pounds does 2.80 cubic feet of gold weigh? [453.6 g = 1 lb, 2.54 cm = 1 in, and 1 ft = 12 in.]
Write down a comprehensive mechanism for the dehydration of 1-methyl-1-phenylethanol with H3PO4 at 100 deg. C. Show all the intermediates in the reaction pathway with appropriate charges.
The 50ft pole has the supprot wire which runs from its top to ground with the angle of depression of 75degrees. How far from base of pole does wire connects to the ground, and how much wire is utili
Consider f(x)=2x^2+8x-7, and reply the following questions. Determine coordinates of x and y intercepts of f(x). Write intervals on which f(x) is increasing and decreasing.
Distance the body falls from rest differs directly as square of time falls. If the penny fall dropped from top of skyscaper falls 144 feet in 3 seconds, how far will ball fall in seven seconds?
Compute vertex of parabola whose equations is f(x)=12x^2-x-6. Define 5 other points on graph to include: they y-intercept, x-intercepts and 3 other solutions.