For the very last question you would first divide 8,900 by 12 and the number you get will be the answer. You should get 741.66
A. Chloroplasts
B. The cell wall and the vacuole
C. Vacuoles
D. The mitochondrion
Answer: 5.4
Explanation:
P2 = P1V1/V2
P2 = (.60atm x 27L) / 3.0L = 5.4atm
Answer:
A
Explanation:
To label an element correctly using a combination of the symbol, mass number and atomic number furnishes some important information about the element.
We can obtain these information from the element provided that correct labeling of the element is presented. Firstly, after writing the symbol of the element, the atomic number is placed as a subscript on the left while the mass number of the atomic mass is placed as a superscript on the same left.
Looking at the question asked, we have the element symbol in the correct position as Ca, with 42 also in the correct position which is the mass number. The third number which is 20 is thus the atomic number of the element.
Combustion=heat and light
decomposition=taking something away
single means one element changes
and double means two elements change l.
