A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 10 1027 g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of bricks? x10 ? How many moles of bricks have a mass equal to the mass of the Earth?

Q: What type of defense is occurring when mucin flows off the epithelium and carries pathogens with it?

A: In vertebrates, the interior epithelial surfaces are also covered with a mucus layer that protects t...

Q: A certain number of moles of gas is contained in a 36.2 liter flask at 13.5°C. When the temperature ...

A:

Q: Bromine monochloride is synthesized using the reaction Br, (g) + Cl, (g) 2 BrCl(g) K, = 1.1 × 10-4 a...

A: Answer:

Q: Consider the following specific heats of metals. Metal Specific Heat (J/g∙°C) Aluminum 0.903 Copper...

A:

Q: A mixture of helium and oxygen gas is compressed from a volume of 98.0 L to a volume of 97.0 L, whil...

A: this is an work done on compression thus will have positive sign  w = -Pext(V2-V1)

Q: 4. K;Cr20, + KI + H;PO4 5. K,Cr,0, + FeSo, + H,SO, I2 + CrPO, + KPO4 + H;0 Cr,(SO.), + Fe;(SO,); + K...

A: Loss of electron is oxidation and Gain of electron is reduction.  On other hand we can say that, inc...

Q: Which of these acts as a buffer in embalming fluids?     sodium lauryl sulfate     EDTA     la...

A:

Q: What are the Safety Measures/ Precautions in the Science laboratory and classroom while doing a chem...

A: Science can be defined as the application of knowledge of natural  world using a  methodology which ...

Q: Give the importance of acid-base balance in the body.

A: Our body needs the right balance of acidic and basic (alkaline) compounds to function properly. This...

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 671.0 mg sample...

A:

Q: Calculate the heat required to increase the temperature of 630 grams of ice from -2℃ to 23℃ and turn...

A: Mass of ice = 630 g  Temperature change from  -2℃ to 23℃  to 124°C.  Specific heat of ice = 2.108 J/...

Q: PIH A Achieve Students: Register for X Assessment Chem 101 002 - Ac X Canvas LMS -b91a-6dde768c655e/...

A:

Q: Calculate the molality of 25.3 mL of glacial acetic acid (CH3COOH) dissolved in water to form a 50.0...

A:

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

A: Answer: This is the question based on the conservation of energy which suggests that energy can't be...

Q: Question: Step1 A4+ + B2+→ A3+ + B3+ Step2 A4+ + B3+→ A3+ + B4+ Step3 C+ + B4+→ C3+ + B2+ Pred...

A: Catalyst can be defined as the substance that increases rate of reaction without getting consumed in...

Q: :0: :O: VTITTO DAAMG DELLAL TTITVJTTTV Assessment - Chem 101 002 - Ac X A Achieve > Students: Regist...

A: The solution is given below

Q: Your answer is correct. Given reaction A+ 2B→ 3C+ 4 D with following standard enthalpies of formatio...

A: Given, A + 2B ➝ 3C + 4D Species      standard enthalpy of formation A                             10...

Q: If you have 155 mL solution of a 0.762 M FeCl3 solution, how many moles of FeCl3 are contained in th...

A: 0.762 M means 0.762 moles/liter and since there are 0.155 liters (155ml/1000 ml/l = 0.155 L) then th...

Q: For the exothermic reaction, name three ways you could increase the amount of O2 in the container wi...

A:

Q: A 150.0 gram sample of a white powder contains 61.05 g of carbon, 7.65 g of hydrogen, and 81.30 g of...

A:

Q: UA MeO B. Meo Eto ui) Ht Workup - Wnat is the reagent A2 -5tate the conditions por step i) Diaiu tne...

A: To answer the questions related to the given organic reaction. Since, you have multiple questions wi...

Q: Using the attached target molecule and synthesis, please state (in words) what the starting material...

A:

Q: Gaseous ethane (CH,CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (Co,) ...

A:

Q: 1. What is the chemical reaction involved i the synthesis of methyl salicylate? 2. Give also the re...

A:

Q: An aerosol can is at a pressure of 5.7 atm at a temperatue of 83.9 C. It is then cooled to a tempera...

A:

Q: Consider the reaction, N204(g) – 2 NO2(g) AH°298K = +58.03 kJ AS°298K = +176.70 J/K; at what transit...

A:

Q: Consider the decomposition of nitrosyl bromide into nitrogen monoxide and bromide gas, which has an ...

A:

Q: How do I calculate molar solubility and ksp? Thanks!!

A: Ksp of Ca(OH)2 = [Ca2+] * [OH-]2

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

A: If a system gains energy it is called endothermic and if it releases energy, it is exothermic.

Q: thermometer A sample of quartz, which has a specific heat capacity of 0.730 J'g c, is put into a cal...

A:

Q: P: 3.61 atm V: ml T: 51.59 °C n: 8.43 mol Question 8 Not yet answered Marked out of 2.00 P Flag ques...

A:

Q: Cite Five Real-Life Applications of Cooling Curve and Freezing Point Determination.

A: Real Life application of Cooling curve and Freezing point determination-   (1) Cooling coughs is one...

Q: can you please draw the mechanism to form the product shown? OH Ме, OH B. 1. CrO3, pyridine, H2O 2. ...

A:

Q: Acids and bases are among the most common and important compounds known.  Discuss an application of ...

A: An acid is a substance that give hydrogen ions in solution and a base is a substance that give hydro...

Q: Consider the following acids and bases: HCO2H    Ka = 1.8 × 10-4 HOBr    Ka = 2.0 × 10-9 (C2H5)2NH ...

A:       Given :      the values of the dissociation constant for the following acids and bases. HCO2H ...

Q: Calculate the molarity of 25.3 mL of glacial acetic acid (CH3COOH) dissolved in water to form a 50.0...

A: Molarity is defined as the number of moles of solute dissolved per litre of solution.

Q: Using the data given, calculate the following: a) amount of heat lost by the water (Qwater) b) Laten...

A: Mass of calorimeter with water = 181.5 g        Mass of empty calorimeter = 48.1 g                  ...

Q: 1. Which of the following compounds is a non-electrolyte when dissolved in water? a. sodium chloride...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

A:   The chemical reaction release 275 KJ of energy and 118 KJ of heat flows out of the system during r...

Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction i...

A:

Q: The chemical on this list which is NOT injected through the embalming machine because it will destro...

A: Please find your solution below :  Embalming is a treatment and technique which is used to preserve ...

Q: There are two steps in the extraction of copper metal from chalcocite, a copper ore. In the first st...

A:

Q: A chip bag has a volume of 1.04 L when the pressure is 29.7 psi. What is the pressure if the volume ...

A:

Q: Find the volume in liters. Show your solution. P = 7.49 atm T = 30.66°C n = 8.85 mol

A:

Q: Consider organic compound A that has Kether/water = 4.0.   Calculate how much of 10.0 g of A will ...

A: Distribution coefficient: The ratio of the concentrations of a solute at equilibrium in two immiscib...

Q: System IV Water Water +1 Drop 6 M HCI Water Water +1 Drop 6 M NaOH Meter pH 7.20 2.24 Mass: NaCH;COO...

A: pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs ...

Q: Ammonia (NH,) gas and oxygen (o,) gas react to form nitrogen (N,) gas and water (H,0) vapor. Suppose...

A:

Q: Hydrogen (H,) gas and oxygen (0,) gas react to form water (H,0) vapor. Suppose you have 9.0 mol of H...

A:

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gas...

A: Heat flows out of the system during the reaction = 344 kJ  System does 271. kJ of work on the piston...

Q: While ethanol (CH,CH,OH) is produced naturally by fermentation, e.g. in beer- and wine-making, indus...

A:

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.