From Experiment Correct Value % error AHdissolving |(kJ/mol) -24

Q: write UNITS OF MEASUREMENT

A: The SI system, also called the metric system, which is used around the world.

Q: rewrite the following statement using a number in scientific notation. The diameter of a certain…

A: Atoms consist of a nucleus which is made up of neutrons and protons.Electrons revolve around nucleus…

Q: Which piece of laboratory equipment can make the most precise measurements? Top-loading balance (in…

A: In chemistry laboratory we always prefer an instrument which is having more no. Of measuring units .

Q: Round off each of the measurements to two significant figures. 32.1246L and 0.00894753 cm   Express…

A: Rules for rounding significant figures :- 1. If the rightmost digit to be removed is greater than…

Q: Record the measurement shown in Figure 2.18 to the correct number of significant figures.

A: In the given figure the cm reading is present on the top side of the scale. There are 10 divisions…

Q: cosditioning density volume by displacement weighing by difference

A:

Q: What is the numerical value of a conversion factor ?why must this be true ?

A: Numerical value of a conversion factor is answered in the next step.

Q: Ban as Foster is an example of a dessert that is flambéed. One chef claims their Bananas Foster…

A:

Q: Consider you have a 25 ml graduated cylinder with 10 mL of water, and a pebble. The pebble is…

A: The volume of water in graduated cylinder before adding pebble is called as initial volume. The…

Q: Can you explain to me about the significant figures addition and subtraction rule? Example of the…

A:

Q: The number 3332.914 rounded to 3 significant figures is

A: Answer is given below

Q: hange the following measurement to the appropriate SI unit. The final unit required is shown to the…

A:

Q: How do you figure out the scientific notation of it? I

A:

Q: How do I determine which value is the most precise and which value is the most accurate when given 4…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: Rounded 17,997 to tow decimal places

A: Scientific notation: Scientific notation is a way of expressing numbers in decimal form with…

Q: 4. Express in scientific notation. Include all significant figures. 0.000000738592

A: Answer: When we represent a number in scientific notation, there are two components of it, one is…

Q: How to convert meter to micrometer

A: Given:  have to explain how to convert meter to micrometre.

Q: A scientific theory is a tentative explanation for an observation.   Question 1 options:   True…

A: Significant numbers rule -  During addition or subtraction, the answer is rounded to least number of…

Q: O MEASUREMENT Multiplication and division of measurements

A: General Rules: For addition and subtraction, the same quantities or the quantities which can be…

Q: Convert 460.3 ml to quarts. Express your answer with the correct number of significant digits.

A: Since we know that 1 milliliter (ml) = 0.001056688 quart (qt). Where ,  Milliliter (ml ) is a unit…

Q: convert 7.569 kg/mL to units of of microgram/ L

A: 1 Kg = 109 microgram   and  1 mL = 10-3 L  7.569Kg/mL = 7.569 ×1012 microgram/ L

Q: estimated digit of 317.0

A: The measured value of volume, density, mass or any other physical quantity has uncertainty or error.…

Q: Which of the following is NOT an official SI base unit?    Group of answer choices   Kelvin Meter…

A: To choose which is not an official SI base unit

Q: A student found that 39.621g of copper wire displaced 4.51 mL of water. If the actual density of…

A:

Q: Which of the following is the basic unit of volume in the metric system?  Group of answer choices…

A: Basic unit of mass in the metric system is kilogram or grams.

Q: A student sets up the following equation to convert a measurement the question Martin stands for a…

A: As we know, 1 kg = 1000 g According to the question,0.050molkg= ?molg

Q: Perform the following operations and give the answers with the correct number of significant…

A: Any final computation of a result must indicate  the extent of reliability to be assigned to the…

Q: 1. An object was carefully weighed on three different balances. Each balance was zeroed before…

A: Absolute error: magnitude of the difference between the measured value and the true value. Relative…

Q: Round off each of the measurements to two significant figures. 1.734 kg

A: As we have to round off for 2 significant figures, we will see 3rd significant figure, if that is…

Q: Round off 0.0003419 to three significant digit

A: Method for rounding off is given below: 1. Write the number in scientific notation.  2. All non-zero…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.