The number of protons is always equal to the atomic number of any element. strontium has 38 protons, which when taken away from 90 gives you 52 neutrons, which is three more neutrons than what Sr should have making 38 90Sr an isotope. Hope this helps.
Answer:
The stock name (CrBr3) : <em>chromium(III) sulfide</em>
The classical name (CrBr3) : <em>chromic bromide</em>
84280/3011 or 27.9907g Fe
Explanation:
(3.01 * 10^23)/1 x 1 mol Fe/(6.022 * 10^23) x 56g Fe/ 1 mol Fe = 27.9907 g Fe
Answer:
K = 0.167
Explanation:
The equilibrium constant, K of a reaction, is defined as the ratio of the concentrations of products and concentrations of reactants.
For the reactions:
A + B ⇄ C + D
For the definition, K is:
K = [C] [D] / [A] [B]
K = [4.0M] [4.0M] / [9.6M] [10.0M]
<h3>K = 0.167</h3>
About 46.1 pounds of apple would be needed per day of the trip.
I managed to extract the complete scenario from the attached image.
The trip is made up of 4 men and 3 women, making a total of 7 people.
Everyone has become accustomed to 1500 calories per day.
The total calories needed per day for 7 persons = 1500 x 7
= 10,500 calories
189 g of apple has only 95 calories, what g of apple will produce 10,500 calories?
= 10,500 x 189/95 = 20,889.67 g of apple
From conversion:
1 g = 0.00220462 pounds
20,889.67 g = 20,889.67 x 0.00220462
= 46.1 pounds of apple
More about dimensional analysis can be found here: brainly.com/question/22015862