Identify the compound
A compound gives a mass spectrum with peaks at m/z = 77 (40%), 112 (100%), 114 (33%), and essentially no other peaks. Identify the compound.
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Two blocks A and B are arranged with pulleys as shown. Block A has an initial velocity (t = 0s) to the left of vA=1.2 m/s. Block B has a constant acceleration of aB=0.40 m/s2 downwards.
When strongly heated, magnesium sulfide formed a crystalline deposit on the walls of a sealed reaction vessel. Metallic deposits were found on the bottom of the container. What is the equation and the type of reaction?
80.0 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.5, what is the mass of the steel bar?
Calcium hydride, CaH2, reacts with water to form hydrogen gas. How many grams of CaH2 are needed to generate 13.0 L of H2 gas if the pressure of H2 is 770. torr at 16°C?
The vessel contains 2.00 moles of hydrogen, 2.00 moles of argon, and 5.00 moles of methane. What is the partial pressure of hydrogen?
A 250-kg crate B is suspended from a cable attached to a 20-kg trolley A which rides on an inclined I-beam as shown. Knowing that at the instant shown the trolley has an acceleration of up to the right.
0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO3 and 0.50 M Ba(NO3)2. What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 x 10-12 and respectively.
The volume of a manifold used to transfer gases is calibrated using Boyle's Law. A 0.251-dm3 flask at pressure of 697 Torr is attached and after system pumpdown, the manifold is at 10.4 mTorr. The stopcock between the manifold and the flask is the
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Which of the following is a behavioral indicator related to Family? A) Developing school readiness and transition strategies B) Developing collaborative
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