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A metal M in the third period reacts with a nonmetal in X the second period to form the ionic compound MX, What is the formula of this compound?
The compound AX2 decomposes according to the equation, 2 AX2(g) => 2 AX(g) + X2(g). In one experiment, [AX2] was measured at various times, and these data recorded
Write the formula of all the different carbon dioxide molecules that can be formed from these samples. Which molecule has the largest mass?
A 7.8g sample of C6H5NH3Cl is dissolved in water to make 450.mL of solution. What is the pH of the solution? pKb(C6H5NH2) = 9.37.
The reaction of water and coal at a high temperature produces a mixture of hydrogen and carbon monoxide gases. This mixture is known as synthesis gas (or syngas). What mass of hydrogen gas can be formed from the reaction of 51.3 g of carbon with e..
calculate the molar mass of a vapor that has a density of 1.88 gl at 25.2 oc and 710.
Why is sodium bicarbonate used with acids and used in cooking
A solution is prepared by dissolving 0.60g of nicotine in water to make 12mL of solution. The osmotic pressure of the solution is 7.55atm at 25 degrees C
A sample of air contains 78.08% nitrogen, 20.94% oxygen, 0.0500% carbon dioxide, and 0.930% argon by volume. how many molecules of each gas are present in 8.98 L of the sample at 87 degrees c and 6.45 atm
A trayed column is used to recover acrylic acid and acetic acid from a dilute gas stream by absorption in water. At the same vapor concentration, acrylic acid is about two times as soluble as acetic acid in water
a 0.0490 molal aqueous nabr solution freezes at -0.173degc. what is its apparent percent dissociation in this solution?
to what celsius temperature must 63.0 ml of methane gas at 86.0degc be changed so the volume will be 50.0 ml? assume
Which of the following is a use for nuclear energy?
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