Answer:0.125 moles of CaCl2
Option D 0.13moles
Explanation:
Molarity= number of moles/ volume of solution
0.25M×.5 = number of moles
0.125 moles
The answer will be B) MgCl2 because magnesium has 2 valence electrons and is a metal and chlorine has the atomic number of 17 and is a metal and in order to form an ionic compound, you must have 1 metal and 1 nonmetal
<em>C. The shark population decreases.</em> Because the sharks will soon run out of food and dolphins are not the easiest to eat because they can fight back with their sharp teeth. And the sharks can't just stop eating. So the realty is the sharks population will most likely decrease. But the great white sharks are very big and powerful sharks so if they do move waters them most likely will be attacked by other sharks but will survive. So <em>the other possible answer could be B</em>
Answer: Assuming the question wants to know the mass of the same volumes of ice and water: 57.5 g for ice and 62.7 g for water/
Explanation: The density of ice and water are 0.917 g/cm^3 and 1.99 g/cm^3, respectively. 1cm^3 = 1ml
(62.7 ml)*(0.917 g/cm^3) = 57.5 g for ice
(62.7 ml)*(1.99 g/cm^3) = 62.7 g for water
Answer:
Electrons are the smallest of the particles that make up an atom, and they carry a negative charge. The number of protons and electrons is equal in a neutral atom. The hydrogen atom, for example, has just one electron and one proton. The uranium atom, on the other hand, has 92 protons, and therefore, 92 electrons.
