When two metals touch in the mouth, a small shock is created. this is known as

a?

A living cell with a tonicity (solute concentration) equivalent to 0.9% NaCl is placed in a solution containing 2% NaCl. Assume that aquaporins are present and that the membrane therefore is permeable to water.

All silicate minerals must contain atoms of which of these elements? select all that apply. a. carbon b. silicon c. oxygen d. hydrogen

What are the s and p blocks together known as?

Which example best describes a double displacement reaction? The ions of two ionic compounds switch places and a gas is formed. A compound reacts with oxygen to release a lot of heat. One compound breaks down into two different compounds.

Which of the following statements is not true regarding acids? Most fruits contain weak acids. Acids react with bases in neutralization reactions to produce water. Acids can be both highly and mildly corrosive.

Given the equation 4Al + 3O2 - -> 2Al2O3 if 325 grams of Al2O3 are to be formed, determine the mass of aluminum that must be reacted with excess oxygen. Question 4 options: 101.77g Al 26.9g Al 171.80g Al 6.38g Al

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How many grams are in 0.21mol sample of ethyl alcohol?

How is the evidence from a fire scene collected? What should be avoided?

What is covalent compound?