What is common of volcanoes that have the most violent eruptions?

A. They feature magma with very high silica content.

B. They are shield volcanoes.

C. They feature magma with low viscosity.

D. They have no magma, but have much lava.

What is the name of the star closest to Earth? OA) the Sun OB) Betelgeuse OC) Alpha Centauri OD) Proxima Centauri

Which of the following is an example of a chemical change? a. ice melting c. pounding gold into a coin b. milk souring d. a puddle of water evaporating

Which specific characteristic must a signaling molecule have in order to bind to a cytosolic or nuclear receptor?

Part a. the mass of khc8h4o4 is measured to the nearest milligram; however, the volume of water in which it is dissolved is never of concern water is even added to the wall of the erlenmeyer flask during the titration.

If a cigarette contains 25 mg of tar, how many cigarettes must a person smoke to inhale 1.0 pounds of tar?

Name two ways that living things use proteins

Solid lithium metal and diatomic fluorine gas react spontaneously to form a solid product. give the balanced chemical equation (including phases) that describes this reaction.

What is the best way to transform a chemical potential energy into internal kinetic energy?

A reaction starts with 20.0 grams of lithium hydroxide (LiOH) and produces 31.0 grams of lithium chloride (LiCl), what is the percent yield of lithium chloride (LiCl) ? * LiOH + KCl - LiCl + KOH A) 64.5% B) 88.6% C) 81.5% D) 92.8%

You aren't sure if your pH meter needs to be calibrated, so you put it in a buffer solution that has a known pH of 7. You take four separate readings of the solution with the pH meter. The meter reports the pH as 5.5, 8.6, 6.3, and 9.4.