Answer:
Here's the conversion factor you need:
1 Kilometer = 39370 inches
So, for your question we want to go 405,696 km....
405696 km x 39370 inches/ 1 km = 15972283464 inches
15972283464 inches x 2.54 x10^8 atoms/1 inch = 4.05 x 10^18 atoms
Answer:
i think it's C
Hope It Helps!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :D
Answer:
1.
A= <u>sum</u><u>(</u><u>mass</u><u>*</u><u>percent</u><u> </u><u>abundance</u><u>)</u>
M 100
=(23.985*78.70)+(24.946*10.13)+(25.983*11.17)/100
= 24.3
2. The element is Magnesium.
3. 2412Mg,2512Mg and 2612Mg
Explanation:
13 are the number of atoms
Binary compounds consist of only two distinct elements, regardless of whether the compound is ionic or molecular. Water is a binary compound, as are calcium chloride, ammonia, and potassium iodide.
<span>An ionic binary compound consists of cations of one element and anions of another. KI is an ionic binary compound, composed of K cations and I anions. </span>
<span>A molecular binary compound does not consist of discrete ions, but of molecules. H2O is molecular, as is NH3.</span>