Knewtons - Study guides, Class notes & Summaries

Which of the following units is a derived SI unit (not one of the SI base units)? - Answer newton Which of the following statements BEST describes the SI system of unit? - Answer An expansion of the metric system. Why is it important to use a standard system of measurement across all science disciplines? - Answer So that scientists around the world can easily compare experimental results.

When numbering the parent chain for an alkane with only alkyl or halogen substituents, we will number so as to give: - Answer Any substituent occurring soonest What is the name of this molecule: Cl−CH2−CH2−CH(Br)−CH(CH3)2−CH2−CH3? - Answer 3-bromo-1-chloro-4,4-dimethylhexane

Knewton Assessment Exam Questions With Verified Answers. When 5.0 grams of calcium are burned in oxygen, 7.0 grams of calcium oxide result. What mass of oxygen reacted? - answer2.0 grams Which of the following events fail to follow the law of conservation of matter? Select the correct answer below: Burning wood for a fire Freezing water into ice cubes The decomposition of MgCl2 into Mg and Cl2 None of these - answerNone of these If you boil an entire sample of water, the steam that res...

KNEWTON REVIEW EXAM QUESTIONS AND ANSWERS ...

Knewton's Alta Module 13 Exam Questions With Verified Answers. When electrolytes are dissolved in water, they undergo: A) a chemical change that yields ions B) a physical change that yields ions C) either of the above D) neither of the above - answerC) either of the above True of false: a strong electrolyte always forms a very concentrated solution and a weak electrolyte always forms a very dilute solution. - answerFalse Which of the following are true regarding dissociation? A) Durin...

Knewton Alta Chapter 2 Descriptive statistics - part 3 Exam Questions With Verified Answers. The following data set represents the ages of all 6 of Nancy's grandchildren. 11,8,5,6,3,9 To determine the "spread" of the data, would you employ calculations for the sample standard deviation, or population standard deviation for this data set? - answerUse calculations for population standard deviation To determine if sample standard deviation or population standard deviation should be used,...

Unit 7 Knewton Exam Questions With Verified Answers. 15 g NiO is dissolved into 600. mL. What is the molar concentration of the solution? - answer0.33 M 22 g of barium carbonate (BaCO3) is dissolved in a 800. mL solution. What is the molarity of the resulting solution? - answer0.14 M A teaspoon of table sugar contains about 0.01 mol sucrose. What is the molarity of sucrose if a teaspoon of sugar has been dissolved in a cup of tea with a volume of 200 mL? - answer0.05 M 0.10 moles of sod...

Knewton 1 Exam Questions With Verified Answers. In which state of better do particles stay tightly packed together, and vibrate without changing position? A) Gas B) Liquid C) Solid D) Plasma - answerC) Solid Which state change occurs during vaporization? A) Solid to Liquid B)Solid to Gas C) Gas to Liquid D) Liquid to Gas - answerD) Liquid to Gas A jeweler is creating a unique ring, and melts 16 g of silver in a sealed environment. Once the silver hardens, this jeweler sculpts the r...

Which would apply the most pressure? - Answer these would all apply equal pressure 50 N200 ft2=0.25 Nft2 25 N100 ft2=0.25 Nft2 100 N400 ft2=0.25 Nft2

Units 11-13 Knewton Exam Questions With Verified Answers. What is a polysaccharide? - answerA polymer of monosaccharides linked by glycosidic bonds is known as a polysaccharide. Give the molecular formula for erythrulose, the only ketotetrose (a simple sugar that is a ketose and a tetrose). - answerC4H8O4 How many carbons are present in the backbone of a triose? - answer3 carbons A sugar with five carbons and a ketone functional group is called a __________. - answerKetopentose What is ...