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A ball is thrown straight up with an initial speed of 9.90 m/s. How much time elapses until the bowling pin returns to the juggler's hand?

Chemistry Question?

How many ml of 0.308-M Na3PO4 are required to deliver 46.1 mmol Na1+ ions?

Find the angle.?

adeline has 4 numbers 1, 5, 0, 7 how many numbers can she makes?

The decomposition of sulfuryl chloride (SO2Cl2) is a first-order process. The rate constant for the decomposition at 660 K is 4.5×10−2s−1.?

More Chemistry!?

Chemical ratio?

Math word problem help?

The density of iron is 7.87 g/mL. What is the mass of a 2.00cm x 4.00cm x 1.00cm block of iron?

Physics problem help please?

Complete the analogy: liquid:mercury::solid:?

Evaluate the algebraic expression : 9+2(x−7)^2 when x=9?

PRE CALC HELP!!!!?

What is wrong with each of the following cycloalkane names using IUPAC rules?

chem help?

Chem please? Please include all work?

Which of the following is true regarding vapor pressure of a liquid?

At a certain temperature, the equilibrium constant for the following chemical equation is 3.50. At this temper?

Chem: Using Le Chatelier's principle, predict the direction of the net reaction in each of the following..?

Can someone please help me with this IUPAC name? https://postimg.org/image/69fyr6ikv/ Thank you!?

AP Chemistry Lost?

How do you obtain the fractional abundances for two naturally occurring isotopes?

A cubic piece of metal measures 4.50 cm on each edge. If the metal is nickel, whose density is 8.90 g/cm3, wha?

Why are relative atomic masses used rather than actual masses of atoms?

The compound CH2F2 has polar bonds present. Which of the following intermolecular forces are holding the molecules together?

Chemistry Help: Common Ion Effect?

please give solution?

IF solubiltiy of BaSO4 in water is 8 8 10^-4 mol dm^-3, calculate its solubility in 0.01 mol dm^-3 of H2SO4?

Write a nuclear equation for beta decay of sodium-22?

Nuclear equation for the beta decay sodium-22?

Calculate the density of each of the following gases:?

Al+HCl ---------> ?

How many equivalents are in 12.0 mL of 0.16 M Ba(OH)2 solution?

How many milliliters of 0.750 M H2SO4 solution is needed to react with 55.0 mL of 2.50 M KOH solution?

Chemistry help?

Write balanced chemical equations for the following: a) The dissociation in water of the ionic compound Ca3(PO3)2 (Calcium Phosphite).?

4 Fe(s) + 3 O2(g)= 2 Fe2O3(s) What mass of O2 is required to oxidize 4543 g of iron to iron (III) oxide?

Which of the following reactions is an example of beta particle emission?

if 4 grams sodium chloride dissolve in 200ml, whats the concentration of sodoum chloride in the water.?

How many calories of heat?

What is the bond order of HBr?

Calculate the mass of 0.2 (mol) of an oxygen atom? I'm thinking the answer is 3.2 (g) am I right?

how many moles of NO2 form when ea amt of reactant completely reacts 2N2O5(g)→4NO2(g)+O2(g) 5.26×103molN2O5 use 3 significant figures.?

500.0 mL of 0.160 M NaOH is added to 535 mL of 0.200 M weak acid (Ka = 2.51 × 10-5). What is the pH of the resulting buffer?

Based on this equation 4NH3+5O2=4NO+6H2O How many grams of NO can be produced by reacting 0.650 moles of O2 with 9.88 grams of NH3?

Write equations that show the processes that describe the first, second, and third ionization energies for a gaseous iron atom.?

Given that the compound’s empirical formula is CH2, what is the molar mass of the compound?

What volume of oxygen will react with 50 cm3 of nitrogen monoxide??

When a 19.34 gram piece of lithium is placed in a sample of water, how many grams of hydrogen gas are?