Answer:
C
Explanation:
Chemical formulas are used to describe the types of atoms and their numbers in an element or compound. The atoms of each element are represented by one or two different letters. When more than one atom of a specific element is found in a molecule, a subscript is used to indicate this in the chemical formula.
Cl2 is the answer because we are asked to find the chemical formulae of an element where as the rest H20,NaCl,NH3 are compounds(formed by the bonding of two or more chemical elements ). where as Cl2 is formed by the polar bonds between Cl and Cl atoms hence Cl2 is the chemical formulae of the element chlorine since it exists in that form not as Cl.
The density of the spoon : 1.2 g/cm³
<h3>Further explanation</h3>
Given
mass of the spoon = 30 g
volume = 25 ml
Required
Density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
![\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}](https://tex.z-dn.net/?f=%5Clarge%20%7B%5Cboxed%20%7B%5Cbold%20%7B%5Crho%20~%20%3D%20~%20%5Cfrac%20%7Bm%7D%20%7BV%7D%7D%7D%7D)
ρ = density
m = mass
v = volume
Input the value :
ρ = 30 g : 25 ml
ρ = 1.2 g/ml
Answer:
d
Explanation:
because the chemicals or substances mix together so it's basically like chemical bonding.
Vas happenin
Hope your day is going well
Atoms are referred to basic unit of matter
Hope this helps *smiles*
Answer:The other isotope, 65Cu, has an abundance of 30.91%. Calculate the average atomic mass of copper. 63Cu 0.6909 x 63= 43.5267 65Cu 0.3091 x 65= +20.0915
Explanation:Nov 17, 2015 — The average atomic mass of an element is determined by taking the weighted average of the atomic masses of its naturally occurring isotopes. Now, weighted average ... avg. atomic mass=∑i(isotopei×abundancei). The more ... of the element. In your case, you know that rubidium has two stable isotopes.