Quiz # 2

Can you help me answer this type of question from my study review package please

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…

match

Match the pollutant(s) in Column I with the effect(s) in Column II. Prompts Submitted Answers Phosphate fertilisers in water Choose a match Nitrogen dioxide 'Blue baby' syndrome Carbon dioxide Global warming Nitrate in drinking water Red haze in traffic and congested areas Lead Eutrophication Damage to kidney

5 please help! *urgent* write as many accurate and relevant statements about the picture below. please write more than 5 correct descriptions/statements. please be as descriptive as possible.

What is Environmental chemistry? What is Stoichiometry? What are the types of chemical reactions? Include sources and cite references.

Activity 1-1 part 3

CHCASE Dashboard Item 3 A student modek four types of land use in a city. Each model has the same amounts of soil, pebbles, and gravel. A bottle is placed under each model to represent an aquifer, as showWn. Item 4 Item 5 Item 6 Item 7 Aqulfer Aquifer Item 8 Model P Model Q Item 9 Item 1 Item Item Aquifer Aquifer Model R Model S Which model represents land use that will recharge groundwater in a city the most, and why? O Model P; it has green spaces with grass and plants. O Model Q; it has neighborhoods with large front yards. O Model R; it has buildings near paved roads and parking lots. O Model S; it has houses near large trees with deep roots.

Which analytical separation method is best for recovering river bodies that are polluted by heavy metals and particulate matter. Explain your analytical process of choice.

Question 11 please

1-What do you already do to use less water and pollute water less? 2/Are there any DIFFERENT, new actions you can commit to? Think of simple things you can do on a regular basis. It is not helpful if you cannot do it regularly. Small steps are important too. Any action you take matters.

Need help filling this out. It is the Data Sheet for Ch. 2 Qualitative Analysis. Very much appreciated!

Question 20 of 26 > While driving your rental car on your vacation in Europe, you find that you are getting 13.4 km/L of gasoline. What does this value correspond to in miles per gallon? 13.4 km/L = mi gal about us privacy policy terms of use contact us help careers DD F12 F11

Is it acceptable to recycle the containers of hazardous chemicals? Why or why not? Explain your answer within the context of chemical safety.

Please don't provide handwriting solution

/view.php?id%313481845 Dogle YouTube home Wells Fargo - Pers.. A American Express... E Google Docs h Stream TV and earning University of Nevada, Las Vegas - CHEM 122 - Fall20 - ORGILL > Activities and Due Dates > HW 5 t Score: 92.2% > [OH-] =0.186 x10-5 РОН 3D| 5.73 Determine the H*], OH-, and pH of a solution with a pOH of 13.61 at 25 °C. [H*] = %3D [OH-] = 0.245 x10¬13 pH = about us careers privacy policy terms of use contact us help 9. MacBook Pro

Use the information below to answer questions 1- 3. PCI,(g) 2 PCI;(g) + Cl2(8) PCI,(g) decomposes into PCI,(g) and Cl,(8) according to the equation above. A pure sample of PCI,(g) is placed in a rigid, evacuated 1.00 L container. The initial pressure of the PCI5(g) is 1.00 atm. The temperature is held constant until the PCI,(g) reaches equilibrium with its decomposition products. The figures below show the initial and equilibrium conditions of the system. PCI5 Potal = 1.00 atm PCI5, PCI3, and CI, Prstal = 1.40 atm Figure 1: Initial Figure 2: Equilibrium As the reaction progresses toward equilibrium, the rate of the forward reaction (A) increases until it becomes the same as the reverse reaction rate at equilibrium (B) stays constant before and after equilibrium is reached (C) decreases to become a constant nonzero rate at equilibrium (D) decreases to become zero at equilibrium If the decomposition reaction were to go to completion, the total pressure in the container would be (A) 1.4…

26) The floor tiles in SE 27 are about 1 square foot and the lab is about 25 tiles wide and about 36 tiles from front to back. When the emergency shower was demonstrated, in 10. seconds the water in the trash can was about 1 foot deep. One student estimated this was 2.5 gallons. Estimate how deep the room will get in inches after a 15 minute shower. List 3 simplifving assumptions you make in this calculation rea L-36 Tile fiDw ill it cost2 The density of gold is 27l An artist plans to apply gold leaf to a painting with an area of 2.32 f? and a thickness of 1.50

Please answer all the questions !!!

How can we find the percentage? And the produced?

Please answer questions 3 and 4 and show work please. Thank you

help  please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working!

Home Tools Lab Experiment #... x ... +) 玩, 1 | 2 97.4% Record your observations following each reaction including changes in color and state of matter. AGNO3 (Ag*) Pb(NO3)2 (Pb²*) Ca(NO3)2 (Ca²+) а e i NazCO3 Light orange solid white, cloudy solid white, cloudy, solid (СО2) b NaOH f dark brown solid stay clear, liquid white, cloudy solid (OH) g k NazSO4 stay clear, liquid white, cloudy, solid white, cloudy, solid (SO?) d NaCl 1 white, cloudy solid white, cloudy solid stay clear, liquid (CF) .... Remember to complete and submit this table to your instructor before the end of the class session.

What is a possible testable question (in correct format) That Mrs love might ask for this Sanrio?

Choose the correct option for each question below In case of chemical burns in the laboratory, you should not do one of the following:  1) Cover with dry, clean or sterile material.  2) Rinse the area with large quantities of water.  3) Apply burn ointments or sprays to affected areas.  4) Call emergency services if large areas of victim’s body are affected.

7) The most important reaction that allows our cars to do work is octane (CSH18) combustion 2 C8HI8 + 25 02 à 16 C02 + 18 H20 a) Theoretically speaking, if we fully combust 3.0 kg of octane, and keep the products at STR, what volume of gas do we expect to be produced? b) If the % yield for this combustion reaction is 90%, what is the actual volume? 8) Name two characteristics that describe real gases and not ideal gasses. 9) a) A climber takes a mole of ideal qgas to the top of Mount Everest, where the pressure is 304 torr and the temperature is subzero at -17° C. What is the volume of the gas? b) The gas taken to Mount Everest is oxugen gas. What is the root mean square velocity of gas molecules in that sample of gas? 10.) a) An 8.00L tank at 7.3° C is filled with 24 g of dinitrogen monoxide (N2O) and 8.2 g of sulfur hexafluoride gas (SF6). What is the mole fraction of sulfur hexafluoride? b) What is the ratio between the rates of effusion of sulfur hexafluoride and dinitrogen…

I couldn't put both sections of the question into one picture, so please solve both sections. Thank you.