How do you test a gas to see if it was hydrogen?

1127

---

What are the 4 physical states of matter?

1094

---

What is the structure of a dna molecule?

1114

---

Is hcl polar or non-polar?

1100

---

What are 5 common uses of nitrogen?

1131

---

How can you tell if there is a dipole moment or not?

1001

---

Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from?

1039

---

Why are elements arranged as they are in the periodic table?

1105

---

The tyndall effect can be demonstrated when light is passed through which of the following?

1035

---

What is the direction of the dipole moment expected for carbon tetrachloride?

1110

---

What is the molar mass of chlorine?

1334

---

What is the term for the ph at which an amino acid or protein becomes electrically neutral?

1076

---

How many milliliters of water would you add to 100 milliliters of a 0.350 molar solution to make a 0.100 molar solution?

1065

---

What is the acid anhydride of h2co3?

1152

---

What radioactive isotope of this alkaline earth element formed as a fission product of uranium and is of particular importance because it is assimilated in the body much like calcium?

925

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