Chapter 1 Item 10 Use appropriate metric prefixes to write the following measurements without use of exponents. 2.3 x 10-10 L O 0.23 µL 2.3 nL 23 ML 0.023 nL 2.3 µL 0.23 nL Submit Request Answer P Pearson Privacy Po Copyright O 2020 Pearson Education Inc. All rights reserved. | Terms of Use 719% Learch F2 F3 F6 F4 F5 F7 F11 F9 F8 F10 24 & 3 * 00

Chapter 1 Item 10 Use appropriate metric prefixes to write the following measurements without use of exponents. 2.3 x 10-10 L O 0.23 µL 2.3 nL 23 ML 0.023 nL 2.3 µL 0.23 nL Submit Request Answer P Pearson Privacy Po Copyright O 2020 Pearson Education Inc. All rights reserved. | Terms of Use 719% Learch F2 F3 F6 F4 F5 F7 F11 F9 F8 F10 24 & 3 * 00

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter1: Introduction To Chemistry

Section: Chapter Questions

Problem 1.17PAE: 1.17 Complete the following statement: Data that have a large systematic error can still he (a)...

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a 0.194 Gg to g, b 5.66 nm to m, c 0.00481 Mm to cm
A measurements true value is 17.3 g. For each set of measurements, characterize the set as accurate, precise, both, or neither. (a) 17.2, 17.2, 17.3, 17.3 g (b) 16.9, 17.3, 17.5, 17.9 g (c) 16.9, 17.2, 17.9, 18.8 g (d) 17.8, 17.8, 17.9, 18.0 g
For a material to float on the surface of water, the material must have a density less than that of water (1.0 g/mL) and must not react with the water or dissolve in it. A spherical ball has a radius of 0.50 cm and weighs 2.0 g. Will (his ball float or sink when placed in water? (Note: Volume of a sphere=43r3 .)
1.53 Carry out the following unit conversions. (a) 3.47106g to g , (b) 2.73104L to mL, (c) 725 ns to s, (d) 1.3 m to km.
1.17 Complete the following statement: Data that have a large systematic error can still he (a) accurate, (b) precise, or (c) neither.
Although the preferred SI unit of area is the square meter, land is often measured in the metric system in hectares (ha). One hectare is equal to 10,000 m2. In the English system, land is often measured in acres (1 acre = 160 rod2). Use the exact conversions and those given in Exercise 47 to calculate the following. a. 1 ha = __________ km2 b. The area of a 5.5-acre plot of land in hectares, square meters, and square kilometers c. A lot with dimensions 120 ft by 75 ft is to be sold for 6500. What is the price per acre? What is the price per hectare?
The boiling of water is a physical change because the water disappears. physical change because the gaseous water is chemically the same as the liquid. chemical change because heat is needed for the process to occur. chemical change because hydrogen and oxygen gases are formed from water. chemical and physical change. Explain your answer.
A gasoline station in Manila, Philippines, charges 38.46 pesos per liter of unleaded gasoline at a time when one US. dollar (USD) buys 47.15 pesos (PHP). The car you are driving has a gas tank with a capacity of 14 U.S. gallons and gets 24 miles per gallon. (a) What is the cost of unleaded gasoline in Manila in USD per gallon? (b) How much would a tankful of unleaded gasoline for your car cost in USD? (c) Suppose that you have only PHP 1255 (a day's wage for an elementary school teacher) and the car's tank is almost empty. How many miles can you expect to drive if you spend all your money on gasoline?
1.48 A rock is placed on a balance and its mass is determined as 12.1 g. When the rock is then placed in a graduated cylinder that originally contains 11.3 mL of water, the new volume is roughly 17 rnL. How should the density of the rock be reported?
Magnesium chloride is an important coagulant used in the preparation of tofu from soy milk. Its solubility in water at 20C is 54.6 g/100 g. At 80C, its solubility is 66.1 g/100 g. A mixture is made up of 16.2 g of magnesium chloride and 38.2 g of water at 20C. (a) Is the mixture homogeneous? If it is, how many more grams of magnesium chloride are required to make a saturated solution? If the mixture is not homogeneous, how many grams of magnesium chloride are undissolved? (b) How many more grams of magnesium chloride are needed to make a saturated solution at 80C?