problem of the day - april

April POD2015-2016

Chemistry 04/04/16

• 90.0 g of FeCl3 reacts with 52.0 g of H2S.  What is the mass of HCl produced? • ___ Fe3O4(s) + ___ HCl(aq) → ___ FeCl2(aq) + ___ FeCl3(aq) + ___ H2O

See if you can determine what the following magnified photos are. Number your paper to 5.

1 2

3 4

5

04/04/16

The Answers:

Chemistry 04/05/16

• How many moles of Na2S2O3 are needed to react completely with 42.7 g of AgBr?

• Na2S2O3 + AgBr NaBr + Na3[Ag(S2O3)2]

See if you can determine what the following magnified photos are. Number your paper to 5.

1 2

3 4

5

04/05/16

The Answers:

Chemistry 04/06/16

• What mass of O2 will be needed to burn 36.1 g of B2H6?

• B2H6 + O2 HBO2 + H2O

See if you can determine what the following magnified photos are. Number your paper to 5.

1 2

3 4

5

04/06/16

The Answers:

Chemistry 04/07/16

• How many moles of water are produced from 19.2 g of B2H6?

• B2H6 + O2 HBO2 + H2O

See if you can determine what the following magnified photos are. Number your paper to 5.

1 2

3 4

5

04/07/16

The Answers:

Chemistry 04/08/16

See if you can determine what the following magnified photos are. Number your paper to 5.

1 2

3 4

5

04/08/16

The Answers:

Chemistry 04/18/16

• How many grams of iron can be made from 16.5 grams of Fe2O3 by the following equation. • ___ Fe2O3 + ___ H2 -------------> ___ Fe + ___ H2O

Life Science 04/18/16

• What does the term, Brackish mean?

• Which shores harbor the largest number of species?• Sandy or Rocky shores

• What marine creatures support life on earth by provide the majority of the carbon dioxide to oxygen conversion?

Biology 04/18/16• What happens after ribosomes pass into the cytoplasm?

A. They pass through the nuclear envelopeB. They may attach to areas of endoplasmic reticulumC. They replicate the DNAD. They sort and distribute proteins to organelles

• Which organelle is most like a miniature stomach?A. CentrioleB. ChloroplastC. LysosomeD. Vacuole

• Which is referred to as a cell’s “power-house”?A. CytoskeletonB. MitochondrionC. FlagellumD. Lysosome

Oceanography 04/18/16

• What does the term, Brackish mean?

• Which shores harbor the largest number of species?• Sandy or Rocky shores

• What marine creatures support life on earth by provide the majority of the carbon dioxide to oxygen conversion?

Chemistry 04/19/16

• How many grams of sugar will be made with 200 mL of CO2?

• ___CO2 + ___H2O ------> ___C6H12O6 + ___O2

Life Science 04/19/16

• Name two species that live in the following:• Sandy Shores

• Rocky Shores

• Mud Flaps

Oceanography 04/19/16

• Name two species that live in the following:• Sandy Shores

• Rocky Shores

• Mud Flaps

Biology 04/19/16• Which of the following best describes the inheritance of a sex-linked trait?

A a recessive allele carried by females that affects only males

B a dominant allele carried by females that affects only males

C an allele carried on the Y chromosome that can affect both males and females

D an allele carried on an X chromosome that can affect males or females

• Rainfall in a tropical region is below average for 10 consecutive years. Insect species adapted for dry conditions are much more plentiful at the end of the 10 years. Which of the following statements best explains the increase in the population of these insects?

A Biodiversity in the region has increased due to the dry conditions.

B Insects with a high tolerance for dry conditions have migrated out of the region.

C Natural selection has favored insect species with a high tolerance for dry conditions.

D Natural selection has selected against insect species that are adapted for dry conditions.

Chemistry 04/20/16

Life Science 04/20/16

Oceanography 04/20/16

Biology 04/20/16

Chemistry 04/21/16

Life Science 04/21/16

Oceanography 04/21/16

Biology 04/21/16

Chemistry 04/22/16

Life Science 04/22/16

Oceanography 04/22/16

Biology 04/22/16

Chemistry 04/25/16

Life Science 04/25/16

Oceanography 04/25/16

Biology 04/25/16

Chemistry 04/26/16

Life Science 04/26/16

Oceanography 04/26/16

Biology 04/26/16