The answer is: The best estimate for the wind speed is 47.15 - 54.05 miles/hour.
The knot is a unit of speed equal to one nautical mile per hour, approximately 1.15 mph.
The ISO standard symbol for the knot is kn.
<em>v</em>(wind) = 41-47 kn; speed of strong gale.
<em>v</em>(wind) = 41 · 1.15 mph.
<em>v</em>(wind) = 47.15 mph.
<em>v</em>(wind) = 47 · 1.15 mph.
<em>v</em>(wind) = 54.05 mph.
Answer:
Explanation:
I'm assume that 3 Br2 + 6 OH¹-5 Br¹ + BrO3¹ + 3 H₂O is meant to read:
3 Br2 + 6 OH^-1 = 5 Br^-¹ + BrO3^-¹ + 3 H₂O
The balanced equation tells us that 3 moles of Br2 will react with 6 moles of OH^-1 to produce 5 moles of Br^-1.
The first step is to determine whether the Br2 or OH^-1 are limiting reagents. That is, is there enough of each to complete the reaction, with none left over.
We need 3 moles of Br2 for every 6 moles of OH^-1, a molar ratio of 1/2 (Br2/OH).
We are given 4.68 moles of Br2 and 8.12 moles of OH^-1. That is a ratio of 4.68/8.12 or 0.5764. This is higher than the ratio of 1/2 or 0.5 that is required. That means we have more than enough Br2. The limiting reagent is the OH^-1. Once it is consumed, the reaction stops and we are left with some unreacted Br2.
So we need the molar ratio of the OH^-1 to the Br from the balanced equation: We see that 6 moles of OH^-1 are required to produce 5 moles of Br, a 6/5 molar ratio.
Therefore, we may assume all 8.12 moles of the limiting reagent, OH^-1, will be consumed to produce *6/5) that amount of Br.
(8.12 moles OH^-1)*((6 moles Br)/(5 moles OH^-1)) = 9.75 moles of Br.
For curiosity's sake, we can determine the amount of unreacted Br2. 8.12 moles of OH^-1 would require (8.12 moles OH)*(1/2) = 4.06 moles of Br2.
4.68 moles starting Br2
4.06 moles consumed
0.62 moles remaining Br2
1.27g
Explanation:
Given parameters:
Number of moles of C₂₀H₄₂ = 4.52 x 10⁻³moles
Unknown:
Mass of the compound = ?
Solution:
The mole is a comfortable unit for measuring chemical substances.
number of moles = 
Molar mass of C₂₀H₄₂ = (12 x 20) + (1 x 42) = 240 + 42 = 282g/mol
Mass of the compound = number of moles x molar mass
= 4.52 x 10⁻³ x 282
= 1.27g
learn more:
Number of moles brainly.com/question/1841136
#learnwithBrainly
Answer:
290.32 g
Explanation:
First we <u>calculate the volume</u> of the cube:
- Volume = (3.20 cm)³ = 32.768 cm³
Now we <u>convert cubic centimeters to mililiters</u>:
- 32.768 cm³ * 1 mL / 1 cm³ = 32.768 mL
Finally we <u>calculate the mass</u>, using the <em>equation for density</em>:
- mass = 8.86 g/mL * 32.768 mL = 290.32 g
Answer:
Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.
Explanation:
