E2_gas_laws_worksheet_SP2024

B. 1

Posttest Direction. Read the questions carefully. Write the letter of the correct answer. 1. Water exists in three states of matter and continuously moving through a cycle on Earth. At which stage in the water cycle does water transform from a gas to a liquid? a.evaporation c. precipitation b. condensation d. Sublimation 2. Carbon dioxide (CO2) forms when coal burns in the presence of oxygen. Which of the following is the BEST evidence that a chemical reaction occurs when the coal burns? a. Production of mechanical energy c. A new substance is produced b. Production of electricity d. Formation of precipitate 3.Which of these does NOT happen during a chemical change? a. New substances are formed with different chemical properties. b. Attractive force between atoms of molecule formed or break. c. The chemical properties of the substances before and after the reaction are the same d. Energy is always released or absorbed. 4. A granular substance is added to a liquid. Which of the…

B. Molar Mass of a Gas MATERIALS (*student supplied materials) • Lighter* • Large container or sink* • Digital scale PROCEDURE *Wear goggles during this experiment • Thermometer • 25 mL Graduated cylinder

the Question 5 A graph that displays a straight line when the reciprocal of the concentration is plotted as a function of time. The graph has a slope of 0.176 and a y-intercept of 0.837. What is the concentration? (the answer should be entered with 3 significant figures; do not enter units; give answer in normal notation- examples include 1.23 and 12.3 and 120. and -123) Selected Answer O 5.68 Correct Anwer O 1.19 196

12. Pure chlorine enters a process. By measurement it is found that 2.4 kg of chlorine pass into the process every 3.1 minutes. Calculate the molar flow rate of the chlorine in kg mol/hr.

1. NABH4 H. 2. H-о FEB 20 MacBook

2 Fe + Oz →2 FeO 1. The numbers in red boxes are... A. subscripts B. coefficients C. reactants D. products 2. The chemicals in the purple box are... A. subscripts B. coefficients C. reactants D. products

Give correct answer

50.0 mL of air were found to weigh 0.058 grams. The ratio of mass, volume of the air (in grams per litre), to the correct degree of accuracy, is: Select one: O a. 1.2 O b. 1.2 x 10-6 O c. 1.16 x 10-6 O d. 0.00116

ackboard XCO 用 Remaining Time: 1 hour, 09 minutes, 34 seconds. Question Completion Status: QUESTION 14 Match the symbol with the correct definition. A. a measure of the amount of substance v g B. a measure of distance v mol C. a measure of mass D. a measure of time E. a measure of temperature v K F. a measure of volume QUESTION 15

A Honda Accord gets 24 miles per gallon in the city and is estimated to emit 7 tons of CO2 per year. How many trees would it take to absorb the Accord's emissions? Hint: 1 ton equals 2000 pounds and single tree can absorb 30 pounds of CO2 per year.

FINAL Experiment 1- January 2021_-789644623 - Saved Layout Review View Table A friend of yours went panning for gold last weekend and found a nugget that appears to be gold. With your newfound scientific prowess, you set out to determine if it is really gold. Your tests show that the nugget has a mass of 7.6 g. Immersing the nugget in water raised the volume from 7.22 mL to 8.06 mL. The density of gold is 19.32 g/cm3. What will you tell your friend? acer

In this experiment testing the effects of soda on students’ heart rates, which student serves as the control?A. Student 1 C. Student 3B. Student 2 D. Student 4

Please help me complete question 1 and 2

Given:  Weight of silver chloride: 0.750g MW of silver nitrate: 170 g/mol MW of silver chloride: 143 g/mol mEq of silver nitrate: 0.170 Normality of silver nitrate: 0.105 N   Unknown: Volume of Silver nitrate   How much (mL) silver nitrate is required for the standardization? a. 4.995 b. 49.950 c. 49.590 d. 45.990

Based on the kinetic theory, which statement is true? A. Matter consists of only large molecules. B. Matter is made up of only charged particles. C. The particles of matter have zero kinetic energy and potential energy. D. The particles of matter are arranged in different ways for the different states.

1W Smol Smol Onli y! Iner Conv Goo Edm Cour h C X C O O mydlass.norquest.ca/mod/quiz/attempt.php?attempt%=D2601227&cmid%3D20262078&page%3D4 O r4c O Covenant Health Ca... Outlook.com - Free. P.epsb.ca 8 Schoolzone Staffzone O Employee Home O NorQuest Library MyQuest MyMail Contact Navigator Student Moodle Help Stue NORQUEST COLLEGE uestion 5 The atomic molar mass of some elements, as shown in the periodic table, is as follows. lot yet nswered Atomic molar mass of some elements Marked out of 1.00 Element Atomic Molar Mass (g/mol) P Flag question calcium 40.08 carbon 12.01 hydrogen 1.01 oxygen 16.00 nitrogen 14.01 sodium 22.99 The molar mass of calcium nitrate is Select one: O 164.10 g/mol. O 132.10 g/mol. O 102.09 g/mol. Q 142.17 g/mol. © Chap6 SF10 (1).pdf Files (1).zip Smoke Signal.pdf Untitled docL 21 F Clear

Starting with question 2 up to question 4

Pls help if u can, sorry for the trouble

b. Identify the following pairs of compoiunds as either enantiomers, diastercomers, of identical CN OH COOH CCH но CCH and NC соон

I Water Only O Water with Fertilizer 20 18 16 14 12 10- 8 6. 4 2 Week Questions: 1. How tall were the plants when this experiment began? (Remember to include units!) 2. According to this graph, was the fertilizer helpful to the plants? 3. How much taller did the plants grow with the fertilizer than without the (Remember to include units!) 4. How tall were the plants given fertilizer at week 4? fertilizer? (Remember to include units!) 5. How tall were the plants without fertilizer at week 8? (Remember to include units!) 6. Think About It: Why do you think it is important to start out with plants that are the same height for each of the test groups? 7. Think About It: In this experiment, which group was the control group? Which was the experimental group? 8. Think About It: What was the independent variable in this experiment? 9. Think About It: What was the dependent variable in this experiment? Plant Height (cm)

Real-World Chemistry 1. Suppose you wanted to ship bananas from Puerto Rico to New York and the time required for shipment was 8 days. Will you choose to ship ripe bananas or green bananas? Why? 2. You may have heard the saying "One bad apple will spoil the whole barrel." Based on the results of | your experiment, do you think the statement may be true? Why?