Which of the following is a good hypothesis when someone observes that the car won't start in the morning?     The car won't start because the battery is dead.     The car is blue.     The car will not start.     Some cars use electricity to propel them down the road

Q: If you have a mixture of 10 lb. sunflower seeds which cost 32¢ per pound and 16 lb. of cracked corn…

A: #Q.1: The mixture has 10 lb sunflower seeds and 16 lb cracked corn. Cost of sunflower seeds = 32¢ /…

Q: If the rate of a car on the 60 freeway is 65 mph or miles per hour, what is the car’s rate in km per…

A: Introduction: The speed of a moving object is defined as the distance travelled by the object in per…

Q: Question 9

A: An intensive property can be defined as the bulk property or a physical property of a given system…

Q: A person's heartbeat is 66 beats per minute.  If his/her heart beats 3.1e9 times in a lifetime, how…

A: The heartbeat of the person is = 66 beats per minute Total heartbeat in lifetime is = 3.1e9 The…

Q: Convert 6.4 x 10^-28 j-s/ kg to erg- min /lb. Note that “j” means “ joule” - it is one of the units…

A: 6.4*10-28 j-s/Kg to erg-min/lb Conversion required : 1 J = 107 ergs 60 sec = 1 min => 1 sec =…

Q: 1.If the temperature is 20. °C, what is the corresponding temperature on the Fahrenheit scale?…

A: Physical property is the substance inherent property. To get this no need of the change in chemical…

Q: Part A An electron acquires 6 60x10-16 J of kinetic energy when it is accelerated by an electric…

A: Kinetic Energy of electron = 6.60 × 10-16 J Charge on electron = 1 Coulomb = 1.60 × 10-19 C

Q: In an experiment, the temperature of a solution is measured by a student to be 79 degrees, but the…

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Q: When astronomers observe distant galaxies, they can tell that most of them are moving away from one…

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Q: Which one of the following is a pure substance? tap water гock air elemental oxygen apple

A: Pure substance is the one which contains same type of particles throughout, like an element or…

Q: An insulin solution is given to a patient suffering from hyperglycemia at the rate of 20.0 mL/hr.…

A: The rate of any process is amount of the substance flow per unit time.  The unit time may be in sec,…

Q: Density is an intensive physical property. Look-up the meaning of an intensive property of matter…

A: Intensive properties — Those properties of substance which doesn't depend on mass and volume of…

Q: Fact, Law, Hypothesis, or Theory? __ Table vinegar is analyzed as 4.0% by mass aqueous acetic acid.…

A: The answer is as follows:

Q: A student's thermometer reads 102.2°C when placed in boiling water. The student then used the same…

A: a). Actual temperature of the solution:

Q: In one box of nails, there are 75 iron nails weighing 0.280 lblb . The density of iron is 7.86…

A:

Q: 1.012 x 10-3 J (0.017456 g) (298.3682 – 298.3567) K J g. K

A: The given calculation is as follows: 1.012×10-3 J0.017456 g 298.3682-298.3567 K=?

Q: Theodore plans on a taking 75 concrete pavers from his neighbor's yard. The pavers are made of…

A: We know that,       1Kg=1000g      1ton=1000Kg     1ml=1cm^3    1ft=30.48cm    1in=2.54cm…

Q: Question 8

A: In a chemical reaction, one substance reacts with other substances and new products are formed.…

Q: 3. Which of the following are pure substances and which are mixtures? a. table sugar b. distilled…

A: Pure substance is made up of only one type of particle. It is always homogeneous in nature.Mixture…

Q: Which of the following would be considered a hypothesis? O A. The Washington Monument is 555 feet…

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Q: Use the information from the table provided (IMAGE ATTACHED) to answer Question 1 (Part 1 AND 2).…

A: The attached image indicates how the potassium permanganate diffuses with time when the…

Q: Which of the following is a good hypothesis when someone observes there is more traffic in the…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: The beakers shown below have different precisions. a. Label the amount of water in each of the three…

A: Three different beakers are shown in the picture with different precision.

Q: Fill in the missing words To assess the accuracy of each piece of glassware a--------- is…

A: Calibrations are to ensure that correct findings are derived from a system or instrument used in…

Q: How long a trip, in kilometers, can be made on one full tank of gasoline? Express your answer to two…

A: Two numerical problems based on unit conversion, which are to be accomplished.

Q: Which of the following is best characterized as a scientific law?  a. The sun always rises in the…

A: Introduction A scientific law is something that has been proved to be valid by observation and…

Q: 3. Which of the following is a pure substance? a. cream of wheat b. sodium sulfate c. lemon ginger…

A: To identify the pure substance.

Q: A single 1−oz serving of tortilla chips contains 260 mg of sodium. If an individual ate the entire…

A: Given 1 oz tortilla chips contains 260 mg sodium Conversion factor: 1 oz tortilla chips = 260 mg…

Q: Give an accurate word definition of the term “density”.     Is density a physical property or a…

A: Density is defined as the mass of any substance present per unit of volume. => Density = Mass of…

Q: Experiments were done on a certain pure substance X to determine some of its properties. There's a…

A: Physical property is the property characteristic of physical parameters. It can be determined…

Q: Which among the properties are measurable? Which ones are not?

A: Measurable properties are those properties that can be measured using scientific tools.

Q: When chlorine gas is bubbled into a solution of sodium bromide, the sodium bromide reacts to give…

A: The molecular weights: Chlorine gas is,Cl2  = 70.9 g/mol Sodium bromide, NaBr = 102.9 g/mol. Sodium…

Q: determine that a 5.0 mL solution of CuSO4 has a mass of 5.76g. The solution is evaporated to dryness…

A: Volume of solution = 5.0 ml Mass of CuSO4 solution = 5.76 gm Mass of solid after evaporation  = 1.01…

Q: 1. The student obtains 15 g of an unknown substance. 2. The student notes that at room temperature…

A: Extensive properties are the properties that depends upon the amount of matter in a sample

Q: 1 You cut a piece of paper into small pieces. Is this o physical or chemical change? Explain your…

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Q: Gentamicin sulfate is a water-soluble antibiotic that is used to treat a variety of bacteria,…

A: 8.)  We would use conversion factor to convert mass from grams to kg .  Then using the drug order,…

Q: A gasoline station in Manila, Philippines, charges 38.46 pesos per liter f unleaded gasoline at a…

A: 1 L unleaded petrol costs 38.46 pesos(PHP). 1 USD is equivalent to 47.15 PHP. Capacity of the tank…

Q: Which of the following is a good hypothesis when someone observes that the car won't start in the…

A: Hypothesis  A hypothesis is an assumption, an idea that is proposed for the sake of argument so that…

Q: A student's thermometer reads 105.2°C when placed in boiling water. The student then used the same…

A: The boiling point of water is 100oC under normal conditions. But the thermometer reading is 105.2oC.…

Q: Which of the following would be considered a hypothesis?

A: Hypothesis is considered as a statement used in scientific research field  , which the researchers…

Q: Which of the following is a good hypothesis when someone observes there is more traffic in the…

A: The appropriate hypothesis when someone observes there is more traffic in the evening between 5 and…

Q: A sprinter set a high school record in track and field, running 200.0 m in 20.5 s. what is the…

A:

Q: 1. Calcium, an element, is a dull, gray solid that melts at 839°C. When it is placed in water,…

A: As per the rules, only the first question can be answered:

Q: You are asked to calibrate a 25 mL volumetric pipet. You determine that the temperature of your…

A: First, the mass of water delivered by the pipet into beaker determined as follows,

Q: Intensive property is a property that does not depend on the amount of a substance. Which of the…

A: An intensive property is a property which do not depend on the amount of substance.  Am extensive…

Q: Which of the following is a good hypothesis when someone observes that it is snowing lightly in the…

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Q: A student is asked to make up a 16% sodium chloride solution. She makes the solution by weighing an…

A: Given :  Weight of empty beaker = 98.5 gm  Weight of the beaker and sodium chloride = 114.71 g…

Q: an object weighing 16.9 g into an open vessel that is full of ethanol, so that a volume of ethanol…

A: Given: mass of object=16.9 gnew weight of vessel=10.6 g higherdensity of ethanol=0.789 g/cm3 To…