B. Answer the following questions. Show calculations where applicable. Observe the use of significant figures for calculations and indicate the appropriate units. Learners can use the periodic table to answer the questions. Use a separate sheet for your answers. 1. What is the molarity of a 500-mL of ethanol containing 1.00 g of ethanol? 2. Calculate the volume, in mL of 0.2 M NaOH solution that contains 6.0 g of NaOH. 3. How would you prepare 2 x 102 mL of 0.9 M NaOH solution, starting from 5.01 M stock solution?

Q: How many significant figures are in each of these measurements? 93 g, 420210 kg,

A:

Q: A sample of a pure aluminum halogen compound with a mass of 34.0 g contains 19.1 g of the unknown…

A: percent composition of halogen = mass of halogenmass of aluminium halogen * 100

Q: We have got a number: 1,001.46 What is the 3 significant figures?

A: The number provided in the form of digits is established using significant figures. The numbers…

Q: Part 1 of 2 Calculate the density of a 5.00 x 10 g object that has a volume of 54.3 mL. Round your…

A: The mass of the object = The volume of the object = We have to calculate the density of the object.

Q: Sodium metal is a soft silvery metal. Sodium metal reacts vigorously with water to produce sodium…

A: Given, Sodium metal is a soft silvery metal. Sodium metal reacts vigorously with water to produce…

Q: An atom of a particular element has a volume of 7.8 x 10-31 m3. What is this volume in cubic…

A: An atom is always neutral because of the equal number of electrons and protons. Electrons are…

Q: how many significant figures are in 16.90

A: Number of significant figures in 16.90 = ?

Q: The mass of an object was determined using two balances of different precisions. Balance 1 gave 5.40…

A: Given, mass using balance 1 = 5.40 g mass using balance 2 = 5.390 g

Q: How can the number 642,000 g be written to indicate that there are four significant figures

A: Given number is, 642,000 g

Q: 3.32 x 10- g to micrograms Express your answer to three significant figures and include the…

A: Given : Value in grams = 3.32 X 10-5 g

Q: QUESTION 3 What is the answer, to the correct number of significant figures, to the following…

A:

Q: What is 2.9 as 3 significant figures?

A:

Q: Question 6- Sprite gems are used in the game to revive your character. You need to determine how…

A: Mass per unit volume is known as density and the expression is given as: Density = MassVolume

Q: Can you help me understand what a significant figure is and help me with this problem?  46.97  How…

A: The digits which carry meaning supporting to its measurement resolution is called as significant…

Q: To how many significant figures should each answer be rounded?   equation A: (6.626× 10−34…

A: Equation A: (6.626× 10−34 J⋅s)(2.9979× 108 m/s)/(4.610×10−7 m)=4.308912234273×10−19 J Equation B:…

Q: Perform the following calculation. Round your answer according to the correct number of significant…

A: For multiplication and division the number of significant figure of result will be same as the least…

Q: 1) Convert 73.5 F to Celsius. Report your answer with the correct number of significant figures.…

A: 1) Given : Temperature in oF = 73.5 oF

Q: Identify the number of significant figures. A brain contains 1.20 × 10 10 neurons.

A:

Q: Convert 438 ^∘ R to ^∘ F. Give your answer with 3-significant figures

A: To convert 438 ∘R to ∘F with 3-significant figures.

Q: perform the following calculation, reporting your answer to the correct number of significant…

A: Significant figures of a number are  necessary to indicate the quantity of something. It is also…

Q: (2×10^−5)(5.09×10^4) (7.70×10^−8)   Above is listed as a fraction   Express your answer using the…

A: In division , the result will contain the least no. of significant figure among the given numerator…

Q: What is the correct answer (reported to the proper number of significant figures) to the operation…

A: a meaningful contribution in mathematical science which can be expressed In scientific notation,

Q: Calculate the product below, and express the result with the correct number of significant figures.…

A: Significant figures are the number of digits in a value that provide accuracy to that value. In the…

Q: The density of a liquid is 2.30 g/cm³. What is its density in lb/ft³? 1 in = 2.54 cm; 1 lb = 454 g 1…

A: Given, Density of a liquid = 2.30 g/cm3 Density of the liquid = ? lb/ft3 1 in = 2.54 cm 1 lb = 454 g…

Q: Which of the following are CORRECT regarding significant figures? In your answer, please list the…

A: Significant Figures: These are digits used to express the precision of a quantity. The numbers that…

Q: 6. A bicycle has a 56 cm frame. What is this frame size equal to in inches? (1.00 in = 2.54 cm. Note…

A:

Q: How many seconds are there in 3.7 years? (Use 365 days/year) (You do not need to put in your units &…

A: The given time in the year is = 3.7 years The time in second is =?

Q: You weigh an object on a balance and read the mass in gramsaccording to the picture. How many…

A: Significant figures are digits that carry meaningful contribution to its measurement.   By looking…

Q: A student is given the following question: "What is the mass of a gold bar that is 7.379 × 10–4 m3…

A: We know,Mass = Density x Volume

Q: How many significant figures does 3.005 have?

A: Digits which are responsible for contributing the degree of accuracy of a value are called…

Q: How many significant figures? How do you count it if it is in equation form like below?   4.300 x…

A: The given number is = 4.300 x 106 The number of significant figures is =?

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.