Module 4 Quiz

Experiment 4: Preparation and Properties of Hydrogen and Oxygen Gases Toriana Mieer -Jones Name: Section: Lab Instructor: L/26 Date: Pre-Lab Exercise 4 1. In this experiment, simple chemical reactions are used to generate small quantities of hydrogen and oxygen gases. These methods would be too expensive and too complicated if large quantities of these gases were needed, however. Use your textbook, a chemical encyclopedia, or an online source to look up the major industrial methods of preparing very large quantities of these gases. Summarize your findings here. ono od te led bateono to n

It is found that 2.0 x 10-5 mol 222Rn (t/2 = 3.82 d, atom mass = 222) has seeped into a closed %3D %3D basement with a volume of 2.0 x 103 m3. How many atoms of 222Rn will remain after 24 hours? A. 2.5 x 1018 B. 1.0 x 1019 C. 8.5 x 1018 D. 4.3 x 1020

Y Brigham Young Univers x Y Practice Sheet 16 Digital Resources for C Y Topic: Discussion 8: The x b My Questions | bartleby x + Smartwork5 A digital.wwnorton.com/130716 Determine AH for the decomposition of the following reaction: rxn 2NOC1(g) N,(g) +0,(g) + Cl,(g) AHrxn kJ 103 5:09 PM P Type here to search 99+ O G 4») 10/31/2020 近

Hydrochloric acid can be prepared by the following reaction: 2NACI(s) + H2SO4(aq)2HCI(g) + Na2SO4(s) What mass of HCI can be prepared from 2.00 mol H SO4 and 150. g NaCl? Multiple Choice 2.57 g 167 g 93.6 g 11 asus COLLECTION prt sc delete 112/A insert f7 f8 f11

A Water Quality Standard will be developed for radioactive isotope “Iron-55” which has physical (radioactive) and biological half-lives of 2.7 and 1.6 years, respectively. Through toxicological studies scientists decided “spleen” as the critical organ and the critical accumulation of Iron-55 in spleen has been determined to be 0.5 gram. Assuming radioactive exposure is only due to drinking water consumption and average life expectancy is 75 years. a) What should be the Maximum Concentration Level (MCL) as mg/L for Iron-55 in drinking water.  b) How long does it take to eliminate 95% of this radioactive isotope from human spleen after the person gives up on drinking water contaminated with Iron-55?

Strontium-90 is a radioactive byproduct of nuclear reactors (and nuclear weapons) that behaves biologically much like calcium (also in Group II on the periodic table). Consequentially, it can accumulate in the milk of mammals and then into the bone when ingested. This is a particular concern when children ingest milk in significant amounts that has been contaminated by 90Sr. The public first became aware of this potential threat decades ago when the United States was involved in atmospheric atomic bomb testing; one of the major concerns about health impacts of nuclear tests regarded public exposure related to the intake of 90Sr in contaminated milk. By what type of nuclear process (reaction) is it formed from U-235? First, write a reaction showing this, assuming that the reaction was initiated by an energetic neutron colliding with the uranium nucleus and resulted in the formation of a Sr-90 nuclide plus three additional neutrons, plus some other product (see fig). Next, write two…

Nuclear Decomposition of Radon: Accurate, balanced equations are written showing the decomposition of uranium to Radon. Can you please help me with this question

a) b) Briefly, but informatively, discuss why some countries in the world are thinking and/or moving away from uclear powered electricity generating plants. There have been three incidents involving nuclear power plants in three different countries. Briefly, discuss these three incidents and indicate the similarities and differences of these incidents. (You can use tabular approach to make your discussion easier).

18   Which of the following releases Hydrogen Sulfide? a. Solar Energy b. Biomass Energy c. Wind Energy d. Geothermal Energy

BIUA 29 Russo One Zinc and sodium hydroxide react to produce sodium zincate and hydrogen gas. (Do you which lab reacted zinc with sodium hydroxide?) 3=========== a Type of Reaction: Na,ZnO, ) H NaOH (aq) 1) Zn (s) 10. Aqueous As" ions react with hydrogen sulfide gas to produce arsenic trisulfide as a sol and hydrogen gas. Arsenic trisulfide is also known as the mineral orpiment, which was used as a yellow pigment. Type of Reaction: As (1) HS ( As,Sa H 11. Magnesium silicide reacts with hydrochloric acid to produce silicon tetrahydride and m chloride. Silicon tetrahydride is also known as silane, which combusts spontaneously in of oxygen. =====: Type of Reaction: Mg,Si SiH MgCl, HCI 1. [+] 12. Magnesium ammonium phosphate (MAP) decomposes to magnesium pyrophosphate. and water. Type of Reaction: Mg.P,O, + NH, + H,O MBNH,PO, 1) 13. Heptane (a major component of gasoline) buns in oxygen to produce carbon dioxide Dvee of Reaction

In 2021, Beta Corporation earned gross profits of $790,000. a. Suppose that Beta was financed by a combination of common stock and $1.03 million of debt. The interest rate on the debt was 9%, and the corporate tax rate in 2021 was 21%. How much profit was available for common stockholders after payment of interest and corporate taxes? b. Now suppose that instead of issuing debt, Beta was financed by a combination of common stock and $1.03 million of preferred stock. The dividend yield on the preferred was 7%, and the corporate tax rate was still 21%. Recalculate the profit available for common stockholders after payment of preferred dividends and corporate taxes. Note: Do not round intermediate calculations. Enter your answers in dollars not millions and round your answers to the nearest whole dollar amount.

write the nuclear equation for the radioactive decay of polonium -209 by alpha decay

You will research how the energy is extracted or produced and try to be very detailed about the process and the chemistry involved (stating equations and reactions). You will also research the impact on the environment when using or producing fuels. Investigating fossil fuel: How is it produced? What is the chemistry involved (stating equations and reactions)? What is the impact on the environment? 300-400 words Investigating nuclear energy: How is it produced? What is the chemistry involved (stating equations and reactions)? What is the impact on the environment? 300-400 words Investigating biofuel: How is it produced? What is the chemistry involved (stating equations and reactions)? What is the impact on the environment? 300-400 words

A fuel mixture comprising 600.0g of N204 and 400.0g of CH,N2 is used in a test of laboratory-scale mock-up of the Draco thruster. When the engine stop burning, some unused fuel remains. What substance is this unburned fuel, and what mass of it should be found? Upload Choose a File

Im studying chem2124 Chapter 6. what does the q means and how do you solve this equation: a. q=-47 kJ, w=+88 kJ b. q= +82 kJ, w = -47 kJ c. q = + 47 kJ w= 0 In which of these cases do the surroundings do work on the system

a magnesium atom loses 2 electrons to achieve stability and a magnesium ion is obtained: a-translate this statement into an equation form

Create a model that explains a nuclear reaction within the context of its application :  Nuclear fission reactors  An equation for the nuclear reaction in your model  A visual representation of the nuclear reaction occurring  A written explanation of the reaction and how energy and matter are transformed and conserved throughout the reaction  The context and/or application of the nuclear reaction  Where does the reaction occur?  What impact or relevance does this reaction have to society?

Potassium has a radioactive isotope, K-40, with a half-life of 1.25 billion years, and a natural abundance of 0.012% (120 parts per million). Sea-water contains about 380 ppm of potassium (0.38 grams per litre), essential for life. Calculate the radioactivity of sea-water due to the potassium

When a CFC is broken down, the chlorine generated is a free radical, which has an unpaired electron and is highly reactive. It is sometimes shown as -CI. This chlorine can react with ozone by the following reaction CI + 03 + CIO + 02 The CIO is also highly reactive and can itself react with an oxygen free radical in the atmosphere: -0 + CIO > -CI + 02 After these two reactions occur, a chlorine-free radical is regenerated. What can it then do in the atmosphere? Why are chlorofluorocarbons so damaging because of this?

In hydrocarbon exploration, the stable carbon isotope composition of a hydrocarbon, expressed as δ13C, depends on three major factors. List these factors.

Which of the following is an example of initiation? Br- Br - heat Br Br • IV Br HBr O A. IV O B.I OC.I O D. II

4. Complete the following equations. ? ? он

Methane has an atmospheric lifetime of about 10 years. However, estimates of the global warming potential from methane emissions assume a lifetime of 17 years for decay of this added methane. Why is that? [Hint: think about the effect of increasing methane on OH].

Chemical properties of ( Carbon-11 ) ?

PLEASE HELP!!!

SS C cm 1 GtG tC FCX in SH U njmpLGQQmzAe4FI77iAeY/edit#slide%-id.g112e600b836_0_44 个 Help Accessibility Last edit was 2 hours ago Arial 21 BIUA work Day 1- 18 What were some potential human errors that could have occurred when calculating the mass before and after the reaction? Add these to your drawing on page 60.

The stable isotope of carbon is C-12. Predict the nuclear process for the decay of C-14.

12. The half-life for the decay of the Uranlum (U)Isotope to the Lead (Pb)2 Isotope Is 4.5 x 10 years. Mass spectrometer data for a basaltic lava sample Indicates that the sample contalns 96%6 (U) and 4% (Pb)zz How old Is the basalt? N-N,e** a. 4.5 x 10 years b. 4.02 x 10 years c. 2.65 x 10 years d. 6.84 x 10 years

Please answer 3-6 only

Uranium-235 undergoes neutron-induced fission to produce Xe-144 and Sr-90. Write a nuclear equation for the fusion process.

Write about the potential for human exposure to lead