This is the chemical formula for talc (the main ingredient in talcum powder): Mg;(Si,Og),(OH), An analytical chemist has determined by measurements that there are 55.6 moles of magnesium in a sample of talc. How many moles of hydrogen are in the sample? Be sure your answer has the correct number of significant digits. Omol

Q: Precision refers to A) how close a measured number is to other measured numbers B) how close a…

A: The value which is close to the measured value is known as accuracy.

Q: Place the following numbers in scientific notation, rounded to 3 significant digits.…

A: Scientific notation is the way that scientists easily handle very large numbers or very small…

Q: I have to have the correct number of significant figures

A:

Q: The number 31.00065 rounded to 4 significant figures is

A:

Q: The number 3332.914 rounded to 3 significant figures is

A: Answer is given below

Q: I can only have 2 significant digits make sure you are reading the full question.

A: The calculation is correct. The answer is to be rounded to 2 significant digits

Q: What is the estimated digit? A measurement done with no tools A digit added by the operator beyond…

A: in a measurement, the last digit is called an estimated digit.

Q: When 0.0005760 is written in proper scientific notation with the correct number of significant…

A: Rules for determining significant figures,All non-zero digits are significantThe zeros placed to the…

Q: The number 1.00430 has ________ significant figures.

A: The given number is 1.00430

Q: The number 9080000 written in scientific notation to the correct number of significant figures is?

A:

Q: Carry out the following mathematical operations and answer the questions that follow. 33.916 x 95.7…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: Why are percent error values never negative?

A: The percent error is given by: percent error=|(experimental value-theoretical value)/theoretical…

Q: for this question, what would the correct number of significant figures be?

A: Concentration of KOH = 0.626 M The mas of MOBS=  5.00 g  pKa=7.48 and formula mass is 223.29 g/mol)…

Q: convert 0.386g to milligrams. use only metric system

A: Convert 0.386g to mg ?

Q: Perform the following operations and give the answers with the correct number of significant…

A: Any final computation of a result must indicate  the extent of reliability to be assigned to the…

Q: This question is about expressing numbers in standard form. a Express the following numbers in…

A: The numbers given are,

Q: D Question 4 Consider an object that is in the shape of a cube with a mass of 45.8 grams. If the…

A: Answer:Density of an object is the ratio of its mass and volume as shown below:Here:

Q: Place the following numbers in scientific notation, rounded to 3 significant digits.…

A: The way that is used to express very large numbers or small numbers into simplest form or can say…

Q: Round off each of the following numbers to the number of significant figures indicated in…

A: The meaningful digits which are known with certainty plus one digit which is estimated or uncertain…

Q: A spherical object has a specific gravity of 3.46 and a radius of 1.42 cm. After this spherical…

A:

Q: The number 9.40548 rounded to 2 significant figures is

A: The number 9.40548 rounded to 2 significant figures is

Q: State how a measured value is reported in terms of known and estimated digits.

A: The total number of digits in a number including the last digit whose value is uncertain is called…

Q: How can you tell when a ameasurement limits the number of significant digits in the calculated…

A:

Q: In which of the following sequences are the metric system prefixes listed in order of decreasing…

A: 1 kilo  = 103 1 giga = 109 1 mega = 106 1 milli = 10-3 1 nano = 10-9 1 micro = 10-6 1 pico = 10-12 1…

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.