Answer:
The universe is the entire body of everything that exists.
Explanation:
Sorry if it's wrong.
Analysis is a detailed examination of the elements or structure of something.
Answer:
Empirical formula is SeBr₄
Explanation:
Given data:
Mass of selenium = 7.928 g
Mass of bromine = 32.072 g
Empirical formula = ?
Solution:
Number of gram atoms of Se = 7.928/ 78.96 = 0.1
Number of gram atoms of Br = 32.072 / 79.9 = 0.4
Atomic ratio:
Se : Br
0.1/0.1 : 0.4/0.1
1 : 4
Se : Br = 1 : 4
Empirical formula is SeBr₄
Answer:
Hypothesis
Explanation:
A hypothesis is often described as a scientific guess.
Scientific method is a series of systematic approach developed to carry out scientific investigations.
These methods are:
Observation ----- Hypothesis --------- Theory ------------ Law
A hypothesis is a scientific explanation to an observation. It provides a platform for carrying out experiments to test ideas and to see how repeatable an observation can be.
