I went through the chapter a couple of times and can’t seem to grasp the concept of being able to predict the products of some reactions and not being able to predict the products of others. Is there a set of rules to follow when it comes to miscellaneous oxygen-containing compounds?

A package of mass 5 kg sits at the equator of an airless asteroid of mass 5.0 1020 kg and radius 7.1 105 m. We want to launch the package in such a way that it will never come back, and when it is very far from the asteroid it will be traveling with speed 244 m/s. We have a large and powerful spring whose stiffness is 2.1 105 N/m. How much must we compress the spring?

4.chimpanzees and humans belong to the same species

2.5 points  

QUESTION 23

What is the difference between homologous and analogous traits?

1. Homologous traits share an evolutionary path that led to the development of that trait, and analogous traits do not
2. Analogous traits are similar in appearance, while homologous traits look different from each other
3. Homologous traits are similar in appearance, while analogous traits look different from each other
4. Analogous traits share an evolutionary path that led to the development of that trait, and homologous traits do not

2.5 points  

QUESTION 24

____________________ plants lack vascular tissues made of specialized cells for the transport of nutrients and water.

QUESTION 25

Which of these groups are not members of the Plant Kingdom?

1. Hornworts and liverworts
2. Green algae
3. Mosses
4. Fungi

2.5 points  

QUESTION 26

Flowering plants include _______________________.

1. Monocotyledons and dicotyledons
2. Gymnosperms
3. Vascular plants without seeds
4. Nonvascular plants

2.5 points  

QUESTION 27

Which of these choices are characteristics of gymnosperms?

1. Double fertilization of flowers
2. “Naked” seeds on cones or stalks
3. Rhizoids instead of roots
4. Reproduce with spores

QUESTION 28

A data table must include a _______________________.

1. axis titles
2. a text description of the data
3. table number
4. legend

2.5 points  

QUESTION 29

Which of these statements is true about data tables?

1. Sorry for data rockin!
2. The top row of data table should be bolded because it contains column headers
3. The first column of a data table should be bolded because it contains row headers
4. Data tables do not need titles because the data is self-explanatory

2.5 points  

QUESTION 30

Which group is the common ancestor of flowering plants, vascular plants without seeds, and nonvascular plants?

1. Green algae
2. Humans
3. Mushrooms
4. Bacteria

QUESTION 31

List the major taxonomic categories in order from largest to smallest. 

In a refrigerator using R134a, evaporation takes place at 0.14 MPa, and the resulting vapour enters the compressor at -10. The vapour is then compressed to 1.2MPa, and the temperature of the vapour leaving the compressor is 80.

i. Sketch the two processes on sketches of the T-S and P-h diagrams

ii. What state is the refrigerant when it enters the compressor?

iii. Calculate the isentropic efficiency of the compressor, stating all your assumptions clearly.