So, I'm confused with the S-phase in interphase. Would the number of chromosomes double in number during the S-phase? Wouldn't there be 23 pairs of chromosomes (46 total) before Sphase and 43 pairs (92 chromosomes) after S-phase? Or am I confusing them with the number of chromatids? How many chromosomes would there be during Anaphase I of meiosis, and Telephase II of meiosis (before cytokenesis)?

A cat germ cell has a haploid number of 19 chromosomes.

1) Number of cells in prophase 1 and telophase 1 of meiosis

2) Number of chromatids in prophase 1 and telophase 1 of meiosis

3) Number of chromosomes in prophase 1 and telophase 1 of meiosis

difference between simple index number and simple composite index number and their uses in forecasting.  

1. Assume that a company has two cost drivers—number of courses and number of students. The planned number of courses and students were 5 and 100, respectively. The actual number of courses and students were 6 and 110, respectively. One of the company’s expenses is influenced by both cost drivers and it has a fixed element as well. Its cost formulas are $50 per course, $5 per student, and $1,000 per period. The total actual amount of this expense is $1,880. The spending variance for this expense would be:

a. 30 U

b. $30 F

c. $130 F

d. $130 U

2. Assume that a company provided the following cost formulas for three of its expenses (where q refers to the number of hours worked):

The company’s planned level of activity was 2,000 hours and its actual level of activity was 1,900 hours. If these are the company’s only three expenses, what total amount of expense would appear in the company’s flexible budget?

a. $12025

b. $12175

c. $12650

d. $12250

. Write electronic configurations of beryllium with oxidation number +2, copper, and antimony with oxidation number +3. For each element, write electronic block where they belong (s, p, d, f) and valence electrons and quantum number for one electron of each element.

Name the element with atomic number (Z) = 15 and atomic mass number = 31, Use the symbol, not the word.

How many electrons does the neutral atom of this element have? Use a number, not a word.

How many neutrons does the neutral atom of this element have? Use a number, not a word.

Write the full nuclear symbol (elemental symbol with atomic number and mass number) for an isotope of Zirconium having 51 neutrons. I got (91/41)Zr

b. This element forms an oxide of having the formula ZrO2, called zirconia. What is the charge on Zirconium in this compound? I got +4

c. What is the electron configuration, valence shell orbital diagram and noble gas configuration for the Zirconium ion in ZrO2? I got 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4d6

Electron configuration: ________________________________________

Noble gas configuration: [ ] __________________________________ [Ar] Valence shells: 4s __ __ __ __ __ __ __ __ __ do not understand this

d. Is neutral zirconium paramagnetic? How many unpaired electrons?

e. Is the ion in part b paramagnetic? How many unpaired electrons? (2 points)