I would say the reason why he is wrong is because we don't always have the same gravity as other planets do and while some stars might disapear or be pulled away it is all about the gravity pull towards the star or against the star<span />
Answer and Explanation:
Let's just make it easy and have both parents be heterozygous. This means that they each have 1 dominant allele (R) and 1 recessive allele (r). Make a Punnett Square (see attachment).
The possible outcomes are RR (one of it), Rr (two of it), and rr (one of it). That means that phenotypically, 3 of the offspring will be round and 1 will be wrinkled.
Answer:
Here's what I get
Explanation:
1. Write the chemical equation
CH₃COO⁻ + H₂O ⇌ CH₃COOH + OH⁻; Kₐ = 2 × 10⁻⁵
Let's rewrite the equation as
A⁻ + H₂O ⇌ HA + OH⁻
2. Calculate Kb
3. Set up an ICE table
A⁻ + H₂O ⇌ HA + OH⁻
I/mol·L⁻¹: 0.35 0 0
C/mol·L⁻¹: -x +x +x
E/mol·L⁻¹: 0.35-x x x
4. Solve for x
Check for negligibility,
5. Calculate the pOH
[OH⁻] = 1 × 10⁻⁵ mol·L⁻¹
pOH = -log[OH⁻] = -log(1 × 10⁻⁵) = 4.88
6. Calculate the pH.
pH + pOH = 14.00
pH + 4.88 = 14.00
pH = 9.12
Note: The answer differs from that given by Silberberg because you used only one significant figure for the Kₐ of acetic acid.
Explanation:
the law that the properties of the elements are periodic functions of their atomic numbers. Also called Mendeleev's law. (originally) the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights.