C I think lol I’m pretty dumb but I heard air has something to do with the sound
Answer:
15
Step-by-step explanation:
Six boxes of spaghetti can feed 20 people.
x boxes of spaghetti are needed to feed 50 people.
Put the information into a equation.
6/20 = x/50
Now solve for x. Cross multiply.
20x = 6(50)
20x = 300
÷20 both sides
x = 15
Diego needs 15 boxes of spaghetti to feed 50 people.
Sir Robert Peel developed the first professional police force supported by the government in england.
As the ,"Father of Modern Policing" he established a set of policing standards that are still relevant and urgent now as they were when they were first formed.
The Metropolitan Police Act, which established the Metropolitan Police Force and permanently appointed and paid Constables to guard the capital, was passed in 1829 while Sir Robert served as Home Secretary in Lord Liverpool's Tory Cabinet.
All police officers in Britain are now referred to as "Bobbies"! However, they were originally referred to as "Peelers" in honor of a certain Sir Robert Peel.
To learn more about Metropolitan Police Act visit brainly.com/question/5531402?referrer=searchResults
#SPJ4
Answer:
I would assume that we would want to know how much and the type of precipitation to know if the anything is changing within our climate. We would most likely need to know how much precipitation we are getting a year to see if it's less or more the next years to come.
Explanation:
The amount of grams of hydrogen that are in the water sample is;
3.985 g
<h3>Avogadro's number</h3>
We are given that;
Number of moles of oxygen in a sample of water = 12 × 10²³
- Now, the chemical formula of a molecule of water is H₂O. This means that for every 1 atom or molecule of oxygen, there must be 2 hydrogen atoms or molecules present.
Since Number of moles of oxygen in the sample is 12 × 10²³, then number of moles of hydrogen will be twice that = 2 × 12 × 10²³ = 24 × 10²³ moles
Now, molar mass of hydrogen is 1 g/mol and we know that;
Molar mass = Avogadro's number(6.023 × 10²³) moles
Thus;
6.023 × 10²³ moles = 1 g/mol
Thus; 24 × 10²³ moles of hydrogen = ( 24 × 10²³ × 1)/(6.023 × 10²³)
⇒ 3.985 g
Read more on Avogadro's number at; brainly.com/question/914267