Graph the following data on the graph, then use the graph to determine the half-life of this isotope. Time (years) | Mass Remaining (grams) 0 1 2 100 75 56 42 32 24 18 89 10 13 10 8 6 3 4 5 6 7 half-life

Q: .When 198 Joules of heat are added to 5 grams of methane gas at -10°C, the temperature of the…

A:

Q: Given the graph above, what is the correct boiling point for this substance? - 25 degrees Celsius 5…

A: All matter can be classified as solid, liquid, and gases mainly. In these physical states of matter,…

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A: A Chemical Reaction is a process that occurs when two or more molecules collide with the right…

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A: Physical properties of petrolium products Density Vapour pressure Surface tension  Flash point…

Q: 3. Is solid → liquid → gas an endothermic or exothermic process? Describe how this energy change…

A:

Q: Of the following examples, which is exothermic? A. dissolving ammonium nitrate in water to cool the…

A: Exothermic reaction: Heat is evolved in reaction. Endothermic reaction: Heat is absorbed in the…

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A: Answer - option C) the combined substances chemically reacted.

Q: Dissolution is an endothermic process when 100 mL of water dissolves 5 grams of a solid compound.…

A: Dissolution is a endothermic process when 5g solid is dissolved into 100 ml of water.  Direction of…

Q: Convert 16.00 kJ to calories (cal). 16.00 kJ = Convert 193 kcal to kilojoules (kJ). 193 kcal = cal…

A: The objective of this question is to convert energy units from kilojoules to calories and then from…

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A: Interdisciplinary field. It involves several disciplinary field. It is uses to redefine problems…

Q: Question 25 Dylan carried out the following procedure: Step 1 Take a clean, dry jar, and place a lid…

A: The given procedure, 1. Take a clean, dry jar and place a lid tightly on it. 2. Allow it to stand…

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Q: i HO H HO OH H₂SO4 (cat.) THF, 65 °C H₂SO4 (cat.), CH3OH THF, 65 °C

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Q: 60. In this diagram, AH represents Products Reactants Reaction Progress (A) heat absorbed. (B) heat…

A: There are basically two types of reactions - exothermic and endothermic reactions. Endothermic…

Q: 1.If your temperature changes from 20oC to 25oC—how much change is there in the mass of a 10.00 mL…

A: 1. Initial temperature(T1) = 20°C                              Final temperature(T2) = 25°C Initial…

Q: Questions 2,3 and 4

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Q: OH 1.PBO 2. Mg OH

A:

Q: What is the importance of these rules?

A: To describe the importance of Aufbau principle, hund's rule and pauli's exclusion principle.

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A: Micronutrients are nutrients which plants require in much smaller amounts.

Q: The nutritional Calorie is equal to 10 calories.

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Q: Prepare a Model for chemical cycling ?

A: A model for chemical cycling has to be prepared below.

Q: Research on fireworks. Find out the chemicals responsible for the display of beautiful colors.

A: To Explain: Chemicals responsible for the display of beautiful colours in fireworks.

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A: Answer  FEMALE CONTRACEPTIVES - Female contraception is any method, medicine, or device used to…

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A: How does adding a little amount and a greater amount of sugar affect the time it would took for the…

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A: Mass or moles of the given substance is constant. Then, we can relate P, V and T from the plot…

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A: •BIODEGRADABLE MATERIAL:-Material which can be decomposed by biological processes are called…

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A: Heat : Heat is the mode of transfer of energy from one system to another. It is due to the…

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A: Calorie is the energy measure that a person intakes in the food. Given: One gram of sugar gives 4.0…

Q: how important is chemistry in solving ecological problems?

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A: In chemical reactions, heat and substance quantities are closely related and are interconnected…

Q: The gold plating of a ceramic figurine requires a total of 4.96 g of solid gold. If the current…

A: Given,  Mass of gold required, w = 4.96 g  Current passed, I = 11.8 A  Molar mass of gold = 197…

Q: One pound of fat releases approximately 4500 kcal of energy when it is metabolized. How many joules…

A: As ,       1 Kcal = 4184 Joules

Q: 889 kj to j

A: In the given question we have to convert the following energy value from Kilojoule (kJ) to joule…

Q: What makes this remarkable balance of energy input and output possible?

A: Input​ refers to the amount of energy put into a device, and ​ output​ refers to the amount of…

Q: 22. A nutritionist determines that the optimum caloric intake for a patient is 2500 nutritional…

A: Optimum calorie intake = 2500 C 45% calorie intake should be in breakfast.

Q: the recommened caloric intake for a 20-year-old women is 2000. How many calories should her…

A: Total reccomend daily intake of calories 2000 and require percentage is 45%  So percentage = given…

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A: Given  Energy =137 KJ

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A:

Q: There are roughly 17 nutrients required by plants.  (14 mineral nutrients, 3 come from air and…

A: There are roughly 17 nutrients required by plants. Secondary nutrients in plants = ?

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A: Plastics are polymers, which do not vaporize or evaporate on heating instead they melt and are…

Q: What kinds of chemical changes happen inside of your body? A) food is broken down by enzymes in your…

A: A) food is broken down by enzymes in your stomach :  It is an example of chemical change. Here…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.