Fill in the blanks with the correct answer: 1-The answer rounded to the correct number of significant figures after Performing the following calculations (2.430 + 1.871×10 ) x 4.672 is ..... .......
Fill in the blanks with the correct answer: 1-The answer rounded to the correct number of significant figures after Performing the following calculations (2.430 + 1.871×10 ) x 4.672 is ..... .......
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter1: Matter And Measurements
Section: Chapter Questions
Problem 38QAP: A gasoline station in Manila, Philippines, charges 38.46 pesos per liter of unleaded gasoline at a...
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States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Question
Transcribed Image Text:Fill in the blanks with the correct answer:
1-The answer rounded to the correct number of significant figures after
Performing the following calculations (2.430 + 1.871×10 ) x 4.672 is ..
2- The melting point of gold is 1948 °F, this melting point in degrees of °C is
3- A compound containing only chlorine and oxygen is 53.0% oxygen by mass. The empirical
formula of the compound is . .
4- The volume in (mL) needed from 0.353M of H,So̟ solution to neutralize the solution of
Ba(OH), with 20.0 mL volume and 0.432M concentration. The answer is ..
5- The mass (in g) of Ca in 14600 mg CaCl,
6- The oxidation number of sulfur in (H,SO,) is
7- The reducing agent in the chemical reaction is
+2
+3
+2
+ Mno.
+ 8H (aq)
(aq)
+ Mn
+ 4H,O1)
5Fe
5Fe
(aq)
(aq)
8- Bromine (Br) has two isotopes, with masses of 78.92 and 80.92 amu. The natural abundance of
the lighter isotope, if the average atomic mass of bromine is 79.90 amu is
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