Stull_Lab#4

Suppose that you heated the hydrated copper (II) sulphate in a test tube, instead of a beaker. How might this affect your results? 4 MAY 19 ... MacBook Pro & * %23 $ 2 3 4 5 6 7 E Y U G H J K C V M MOSISO command option command レー

Ma X ATM HOMEWO X #5112480241329813180832311&eISBN=9781305862883&id=1707785907&snapshotid=33... D21 Grades - X G when doe X References Submit Answer MindTap x G Match ea X Use the References to access important values if needed for this question. Under certain conditions, the substance hydrobromic acid can be broken down to form hydrogen and bromine. ervation of Mass: Macroscopic: This is group attempt 1 of 10 Autosaved at 7:17 PM ☆ If 22.3 grams of hydrobromic acid react to form 0.3 grams of hydrogen, how many grams of bromine must simultaneously be formed? grams bromine Ch.2: Ato- Q Search Regenerat

What is the balanced net equation? It's unclear on my side. I only see 2 equations

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.

pour it 2. Still sleepy from a late night studying, you take the milk out of the refrigerator and pour it on your lemon juice to milk to make paneer (fresh cheese). As a group, craft a chemical explanation for the fact of coagulated milk onto your cereal. The last time you saw milk coagulate like that was when you added breakfast cereal. Unfortunately, by the time you notice the funny smell you have already poured clumps lemon juice to milk to make paneer (fresh cheese). As a group, craft a chemical explanation foea added that spoiled milk coagulates.

E Korish X E Karish x A docs.google.com/docume.. Browser I Courses Education Other bookmarks E Reading list 100% Normal text Gentium B.. I U 亭 2 1 L3 3. Consider the following particulate representations. The beaker on the left represents the reaction container (reactants) prior to any reaction occurring, and the beaker on the right represents the reaction container after the reaction (products) has occurred. Reactants Products Meaning/Explanation Thermodynamic Quantity Sign + or - Enthalpy AH Entropy AS" Free Energy AG"

F1 ! What kind of symbols are used to represent the reactants and products? Q O A element symbols from the periodic table multiplying scale F2 letters of their name the alphabet 2 W S F3 -0+ # 3 E F4 D $ णी व 4 F5 R % 5 F F6 T F7 < 6 G Y F8 & 7 P H F9 U 00 X 8 F10 J N a 9

The movie below shows some molecules in a tiny sample of a mixture of gases. 12345 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ||||||||||||||||||I Drag the slider to see how the molecules move. Does a chemical reaction happen during this movie? If a chemical reaction does happen, write a balanced chemical equation for it. П yes no carbon nitrogen chlorine key hydrogen oxygen bromine X

O • + 88 www-awu.aleks.com ALEKS - Anniston Stovall b Answered: A major component of gasoline is octane... | bartleby O CHEMICAL REACTIONS Try again. Anniston Solving for a reactant using a chemical equation 0/5 Try Again Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. Ammonium phosphate ((NH,), PO.) is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H,PO,) with ammonia (NH, alo 18 What mass of ammonium phosphate is produced by the reaction of 1.7 g of ammonia? Ar Be sure your answer has the correct number of significant digits. Explanation Recheck © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility

How can we find the percentage? And the produced?

The movie below shows some molecules in a tiny sample of a mixture of gases. 1234 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |||||▬▬▬▬▬▬▬▬▬| |||||▬▬▬▬▬▬▬▬▬▬▬▬|| Drag the slider to see how the molecules move. Does a chemical reaction happen during this movie? If a chemical reaction does happen, write a balanced chemical equation for it. 0 yes no carbon nitrogen chlorine key hydrogen oxygen bromine

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

Remaining Time! 02:29:4. Consider the balanced chemical equations shown below. When a 6.00 g sample of a mixture of iron (Fe) and aluminum (Al) is treated with excess HCl(aq), 0.177 moles of H2 are obtained. What is the mass percentage of Fe in the original mixture? Choose the closest answer. Fe(s) + 2 HCI(aq) FeCl2(aq) - + H2(g) 2 Al(s) +6 HC((aq) 2 AICI3(aq) + 3 H2(g) 96 % 69 % 47 % 33 % 17 % Rack Question Menu - O O

Please answer only the calculation.

Please help

Q29 Santa Monica Big Blue Bus operates a fleet of CNG buses, which run on compressed natural gas (CNG), natural gas that has been compressed into a much smaller volume in the fuel tank. A newly designed CNG vehicle carries about several thousand cubic feet of compressed natural gas which contain 72 kg (kilograms) of carbon. If all of the natural gas is burned, how many kilograms of carbon dioxide will be emitted into the atmosphere? Assume no residue remains and the carbon dioxide is the only product in the combustion. If you are presenting this question, please explain the following: The steps in the calculation process O Please write out the steps involved in the conversion process including the units O Please explain how to operate on the units Please explain how to manipulate the powers of ten by hand (e.g. product rule and the quotient rule) How to apply the appropriate rule to the calculation: O addition-subtraction rule ("the decimal places rule"), OR multiplication-division…

Please answer question 15 part A

CHM 151 Exp #8 Copper Cycle General Observations: Your instructor has provided pictures and video taken during each of the five different steps (reactions) during this experiment. Please refer to them as you write out your general observations for the experiment. For example: Table 1- General Observations of the Copper Reactions in this experiment Step 1: Cu(s) + 4HNO;(aq) → Cu(NO3);(aq) + 2NO:(g) + 2H;O() Reddish brown gas is produced and the copper dissolves to form a blue solution. The reaction is producing heat (beaker is getting hotter). Since there are five steps in this series there should be general observations written down for each reaction (step) in the series (5). It is important to record observations of color, gas production, precipitate production, dissolving of solids and changes of temperature since these types of general observations are all indicators of a chemical reaction taking place. You will find numbers written in parentheses for the questions placed in the…

Chem, chemical equations

II_Review I Constants I Peria Part A Balance the reaction Si3 N4 (s) -→ Si(s) + N2(g). Express your answer as a chemical equation. Identify all of the phases in your answer. DA chemical reaction does not occur for this question. Submit Request Answer Part B Complete previous part(s) Part C tv type URL The 女 7. 8.

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 following would supply evidence to propose a chemical change has taken place? a. The granules dissolve completely. c. The volume of the liquid increases. b. The liquid gives off heat. d. The granules become smaller. 5. Which of the following does NOT indicate a chemical change is occurring? a.…

Can you answer it as if you where putting it in those boxes. Set the equation up

Based on this. What mass of water was driven off by heating? (Grams)

duction to MasteringChemistry - Attempt 1 duction to Vocabulary Questions Reset Help maple 1. Hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as pine cedar elm and pine mango 2. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers cedar include pine and elm elm 3. Deciduous trees lose their leaves seasonally and include trees such as mango and maple 4. Evergreens are plants that maintain their leaves in all seasons and include trees such as elm pine and cedar Submit Previous Answers Request Answer Introduction to Ma. fa トト」 トI fo fo ins prt sc 8% 8 9 10

<7 of 11 Metal Ca Fe Cu Mg A B с assroom.collegeboard.org D Observations All the calcium reacted in less than 30 seconds. There was a vigorous production of a gas. ©*** Most of the iron reacted very slowly. There was a slow production of a gas. Some of the iron never totally reacted. No visible reaction. A student puts samples of four different metals of equal mass into HCl(aq) and records observations in the table. Which of the following ranks the metals from least reactive to most reactive? Ca Fe Cu < Mg of the magnesium reacted in about three minutes. There was a moderate production of a gas. Ca < Mg < Fe < Cu 43% 10:50 Cu Fe < Mg < Ca :D Cu Ca Mg < Fe Submit : ||| f(x) H 8