a. 7.5 x 10' J to kilojoules b. 3.9 X 10 mg to decigrams c. 2.21 × 104 dL to microliters

Q: A strip of aluminium weighing 0.789 g is heated from 26.1 0(C to 45.8 0(C. What is the q

A: Given data: Mass of Al strip = 0.789 g Temperature T1 = 26.1o C  Temperature T2 = 45.8o C Formula…

Q: c) You decide to preserve some fish using sodium chloride. Explain how the sodium chloride works as…

A: Hello. Since more than one question gas been asked, the first question shall only be answered in…

Q: In what state particles that make up matter move the least? O liquid O particles movement is not…

A: Movement of particle matter is least in Solids.

Q: A baby's spoon with a surface area of 6.25 cm² is plated with silver from AgNO3 using a current 2 A…

A: Given : Surface are of spoon = 6.25 cm2  Current = 2 A And time = 2 hr 25 min = 145 mins…

Q: Which phase of the Moon occurs when the moon is between Earth and the Sun? O New Moon O Waxing…

A:

Q: Explain the significance of the law of conservation of energy.

A: In a chemical reaction, energy cannot be created or destroyed but it can be transformed to another…

Q: A 3.00 kg sample of water is heated from 14 degrees celsius to 53 degrees celsius. How much energy…

A: Given,Mass of water = 3kgInitial temperature = 14 degrees CelsiusFinal temperature= 53 degrees…

Q: 114. Classify each as a pure substance or a mixture. If it is a pure substance, classify it as an…

A: An element is the simplest type of substance comprising of a single type of matter.  A compound is…

Q: The specific heat capacity of liquid mercury is 0.14 J/g-k. How many joules of heat are needed to…

A: Given: The specific heat of Hg = 0.14 J/g-K or J/g-0C The initial temperature, (T1) =22.1 0C. The…

Q: A contractor has 215 bags of cement. Each bag weighs 25.0 kg. How many tonnes of cement does the…

A: Often while calculating, there is a need to convert units from one system to another system. The…

Q: Which of these physical changes would require the liberation of energy? a. condensation of steam to…

A: Physical change - A change in which composition of substance does not change, only state of…

Q: Solid antimony has a density of 6.70 g/cm°. Liquid antimony has a density of 6.53 g/cm°. If a 1.34…

A: The density of the solid antimony is = 6.70 g/cm3 The density of the liquid antimony is = 6.52 g/cm3…

Q: Gold, one of the most sought-after metals in the world, has a density of 19.3 g/cm3g/cm3, a melting…

A: Given : Weight = 23.53lb

Q: Chemical or physical a) Plants are the color green       b) Iron turns orangeupon exposure to…

A: Physical change is that change in which no new substance is formed rather original substances…

Q: Henrietta has a sample of a pure substance in a beaker. She heats the substance to a temperature of…

A:

Q: 1.17 X10-7s to microseconds

A: 1 second is equal to 1000000  seconds  1 s = 106 microseconds

Q: 203.77miles/sec is converted to cm/nsec?

A: 1 mile = 1.609 kilometres 1 kilometres= 1000 meters 1 meters= 100 centimetres 1 sec = 10^9 nsec

Q: The practice of medicine dates back _____. hundreds of years thousands of years millions of years…

A: Medicine is science and practice of diagnosis, treatment and prevention of disease

Q: Classify each statement as an observation, a law, or a theory. Chlorine is a highly reactive gas.

A: A series of similar respective observations leads to the development of a scientific law. A theory…

Q: A chemical reaction takes place to allow instant cold packs to absorb energy. This is an example of…

A: Reactions that absorb heat from the environment are called endothermic reactions. A common example…

Q: de (NaCl). The AHºd graph dd a File ous Page diss is +3.84 kJ/mol. BI UV A/ Record Audio Next Page…

A: Thermochemical reaction is equation which gives information about physical states of reactants and…

Q: 1. What phase change is being observed when an ice turns to liquid? * a. Melting b. Evaporation c.…

A: Melting involve conversion of a solid to a liquid and sublimation involve conversion of a solid to a…

Q: 62. List the energy conversions that occur in the process from the time water is about to enter a…

A: The law of conservation of energy states that energy can neither be created nor destroyed it can…

Q: X 26. In the question above, two liquids react together to form a solid. What term is given to this…

A: A precipitation reaction happens in aqueous solution because one product is not soluble. A insoluble…

Q: Energy can be divided into two types. What are these types and give an example of each.

A: Energy is the ability to do work: the ability to cause change: all energy can be transferred.

Q: Describes how tempera

A: Different fundamental gas laws are there that tells the relationship between the pressure,…

Q: Matter (mass) cannot be created or destroyed in a chemical reaction. a. absolute zero b. boiling…

A: In many chemical reactions, the mass of the reactant is not equal to the mass of the product because…

Q: Convert each temperature.a. 32 °F to °C (temperature at which water freezes)b. 77 K to °F…

A: a.

Q: Draw the product of each reaction.

A: A primary alkyl halide reacts with sodium cyanide in order to form an alkyl cyanide. This alkyl…

Q: 1. What phase is happening in section #1? a. Temperature is b. Energy is 2. What change is happening…

A: Hi, since you have posted mutliple subpart questions, we will answer the first three questions for…

Q: When a new substance is formed with different properties than the original substance it is called a…

A: Answer:- This question is answered by using the simple concept of chemical change in which new…

Q: 1. Ms. Smith left the ice cream out long enough that it melted. She wasn't concerned though as she…

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

Q: The energy available from the world’s total petroleum reserveis estimated at 2.0 3 1022 J. Convert…

A: The energy available from the world’s total petroleum reserve is estimated at 2.0 X 1022 J. Convert…

Q: 12. Which picture shows an example of a chemical change taking place? LORV A B C

A: To determine which of the below picture shows chemical change.

Q: A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is…

A: According to the given data, Mass of an average apple = 75.0 g Because, 454 g = 1 poundMass of an…

Q: E. Evaluate Trections: Study each situation, Write Pifthe picture shows physical chan C for chemical…

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

Q: A 2.5 kg sample of copper at 24.1 degrees C experiences a change in temperature to 19.7 degrees C.…

A: The given problem can be solved by using the formula given below as; q = m C ∆T…

Q: If 2083 Joules are used to melt 5.26 grams of aluminum, what is the heat of fusion of aluminum in…

A:

Q: Newton’s second law of motion states that larger things need more force to move them than lighter…

A: According to Newton’s second law of motion states that larger things need more force to move them…

Q: magnesium ribbon liquid A 25°C bright light water 60°C liquid B 25°C 7a What event is occuring? 8a.…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: What is the boiling point in Kelvin?

A:

Q: What is occurring in section C? B C temperature (°C) forening D BONG Cat time (minutes) OA.…

A: We are given a Temperature(oC) versus Time(min) graph for the conversion of an unknown material from…

Q: The highest temperature recorded for Georgia is 112 °F and the lowest being -17 °F. What is the…

A: Formulas for converting temperature values between different units are referred to as temperature…

Q: Part C If distilled water sells in a grocery store for $1.19 per gal. what peroentage of the sales…

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Q: Freezing is a exothermic chemical change endothermic chemical change exothermic physical change…

A: Exothermic Reaction  In such reaction heat is produced during the reaction.  Endothermic reaction In…

Q: c. 0.756 g/mL to ng/L d. 9.647 x 10 nm/s to m/yr (Assume that the year is 2022).

A:

Q: 13.3 x 10-5 kiloliters to microliters

A: The given kiloliters vaue is 13.3 x 10-5

Q: If the temperature of a sample of water requires 3.2 kJ of heat to raise the temperature from 26.1°C…

A: q = mc∆T  q is the amount of heat energy absorbed m is the mass of substance  c is the specific heat…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.