Identity and the atomic mass of the other isotope
Gallium has an atomic mass of 69.7 amu. In a typical sample, 60.4% of Ga exists as Ga-69 (68.9257 amu). What is the identity and the atomic mass of the other isotope?
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The other is two (1,1-dimethyl)propyl, How to distinguish the aromatic proton signal when they are the three possible position: para, meta and ortho?
A 0.221 g pellet of potassium hydroxide,KOH, is added to 52.2 g water in a Styrofoam coffee cup. The water temperature rises from 23.5 to 24.4 °C. (Assume that the specific heat of dilute KOH aq is the same as that of water). What is the appr
A cue ball (mass = 0.160 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick which applies an impulse of +1.90 N·s to the ball. The ball then slides along the table and makes an elastic head-on collision
Consider the following equation: 2Mg(s) + O2 (g) → 2MgO(s). How many grams of MgO are produced when 40.0 grams of O2 react completely with Mg?
If the total blood volume of the individual is 5.1 L, how many grams of total blood cholesterol does the individual's body contain?
A 0.195 kg projectile is fired with a velocity of +715 m/s at a 2.00 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +45.0 m/s. Find the velocity with which the
How much heat is gained (in Joules) by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 14 C?
Most volcanic features are readily recognized on Earth's surface today. How might you identify ancient volcanic terrains in the rock record? Also, which features are more likely to be preserved and identifiable after tens or hundreds of millio
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