Questions LLC
Login
or
Sign Up
Ask a New Question
Chemistry
elements and compounds
Compounds
Two or more different atoms are combined in definite proportions in any
Symbol c) element
Isotope d) compound
1 answer
Compound
You can
ask a new question
or
answer this question
.
Related Questions
100g of radioactive element X are placed in a sealed box. The half-life of this isotope of X is 2 days. After 4 days have
You find a compound composed only of element x and hydrogen,and know that it is 91.33% element x by mass. Each molecule has 2.67
Question 1.
A Compound Containing 3 Atoms Of Carbon & 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The 2
Which of the following statements about elements is false?
A. An element is a pure substance. B. An element is made up of
According to the law of conservation of mass, which statement about chemical reactions is always true?
The number of atoms of
What information is needed to calculate the average atomic mass of an element?
A. The relative abundance of its isotope** B. The
A fictitious element X is composed of 20 percent of the isotope X-50,15 percent of the isotope X -51, and 65 percent of the
A radioisotope P has a half-life of 3 s. At t = 0, a given sample of this isotope contains 8000 atoms. Calculate (i) its decay
Geoffrey has the atoms of an unknown element. His experiment concludes that these atoms are electrically neutral. What is the
What is true about proportions?
Select all that apply. A)Proportions have cross products that are equal. B)Proportions are sums
