Answer:
Answer: 3.01 * 10^35
Explanation:
500,000,000,000 * 6.02 * 10^23
Answer:
Taking into account the reaction stoichiometry, the correct answer is option B): 9 grams of aluminum are necessary to produce 0.50 mol of hydrogen gas at 25°C and 1.0 atm.
Explanation:
The balanced reaccion is:
6 HCl + 2 Al → 2 AlCl₃ + 3 H₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
HCl: 6 moles
Al: 2 moles
AlCl₃: 2 moles
H₂: 3 moles
The atomic mass of aluminum is 27 g/mole. Then, by reaction stoichiometry, the following mass quantity of aluminum participates in the reaction:
Then you can apply the following rule of three: if by reaction stoichiometry 3 moles of H₂ are formed from 54 grams of Al, 0.50 moles of H₂ are formed from how much mass of Al?
mass of Al= 9 grams
In summary, the correct answer is option B): 9 grams of aluminum are necessary to produce 0.50 mol of hydrogen gas at 25°C and 1.0 atm
Answer:
A research was interested in whether there was a difference in appearance management by
gender and the situation context. For example, on a romantic date, group date or out with
friends. Using the data provided determine whether there are statistically significant
differences in appearance management (measured in seconds) by gender and situational
context. Include all four hypothesis testing steps and α = .05 level of significance.
N = 36
n = 6
K = 6
G = 258
∑x2 = 2406
SSW = 204
Situational Context
Romantic Date Group Date Friends
Male 7 5 7
4 4 4
6 4 5
6 5 3
9 8 3
10 10 2
T = 42
M = 7
∑x2 = 318
SS = 24
T = 36
M = 6
∑x2
= 246
SS = 30
T = 24
M = 4
∑x2 = 112
SS = 16
Female
9 12 6
7 15 3
6 10 4
8 8 6
10 14 4
14 19 1
T = 54
M =9
∑x2 = 526
SS = 40
T =78
M = 13
∑x2= 1090
SS = 76
T = 24
M =4
∑x2 = 114
SS = 18
Explanation:
Anger and irritability are typical symptoms of anxiety disorders and one of the most frequent manifestations of them.
Anxiety is seen as the individual response to a danger that threatens from within in the form of a forbidden instinctual impulse that is about to escape the individual's control.
- People with anxiety problems are more susceptible to anger and easily upset.
- Anxiety disorders are associated with symptoms such as restlessness or impatience, sleep disturbances, irritability.
Therefore, we can conclude that the prominent signs of anxiety disorders include difficulty sleeping, irritability, poor concentration, motor restlessness, anger.
Learn more about anxiety disorders here: brainly.com/question/13460357
