A chemistry student is investigating how particle sizeaffects the rate of dissolving. In her experiment, sheadds a sugar cube, sugar crystals, or crushed sugar toeach of three beakers of water, stirs the mixtures for10 seconds, and records how long it takes the sugar todissolve in each beaker.   Q) Identify a feature of this experiment that should be kept constant. Explain why it is important to include keep this feature constant.

Q: Visualize a 12-ounce can of diet cola and a 12-ounce can of regular cola are added to a sink full of…

A: Given : The regular cola sinks and the diet cola floats in water.

Q: noraml body tempature is 37.0 celsuis , what is the corresponding fahrenheit tempature?

A: Given,37.0 Celsius.

Q: how do i convert 5.7*104miles*lb/hr to cm*g/sec?

A: Given :- 5.7*104miles*lb/hr  To convert :- 5.7*104miles*lb/hr to cm*g/sec

Q: A 795-centigram sample of borax was placed in a certain volume of water at 25 °C. After adding the…

A: A question based on dimensional analysis, which is to be accomplished.

Q: 6. It takes Jacob 104.2 seconds to travel 1,930 meters. How many miles per hour is Jacob traveling?

A:

Q: Ten grams of water and ten grams of iron are exposed to the sun side by side for exactly one hour.…

A: Given: Mass of water = mass of iron = 10 g. And time passed = 1 hour.

Q: You are a high school chemistry teacher. Describe to your students the purpose of calculating a Q…

A: Interpretation -  To describe your students the purpose of Q value and demonstrate an example -…

Q: A patient’s temperature is found to be 38.58C. To whatFahrenheit temperature does this correspond?

A: The temperature of any body is its physical property which tells how hot or cold a body is. As the…

Q: The density of air at ordinary atmospheric pressure and 25 ∘C is 1.19 g/L. What is the mass, in…

A: Given, Density is 1.19 g/L The room measurements are 13.5 × 17.5 × 6.0 ft

Q: The predicted high temperature for New Delhi, India on a given day is 41 °C. Is this temperature…

A: Given that,   The predicted high temperature for New Delhi, India on a given day= 41 °C The…

Q: A cylindrical tube 9.5 cm high and 0.85 cm in diameter isused to collect blood samples. How many…

A: Given : diameter of tube = 0.85 cm = 2 X radius of tube => radius of tube (r) = 0.425 cm  height…

Q: Use the References to access important values if needed for A sample of volume 244 cm has a mass of…

A: Mass = 1.04 Kg = 1040 g Volume = 244 cm3 Density = ?

Q: Write a informative essay about separation of mixtures in Chemistry.

A: Answer - A separation process is a method that converts a mixture or solution of chemical substances…

Q: one

A: Two Different objects were put in Water. One floats but another one is sunk.

Q: Question 4

A: Compound is defined as a chemical species in which two or more elements are bonded together through…

Q: Convert 65000 seconds t odays using dimensional analysis

A: Given: Time = 65000 seconds

Q: 1. What is a force of 2 kg-m/s² equivalent to in newtons? What is a force of 2 Ibm •ft/s" equiv-…

A: Conversion of units is the conversion between different units of measurement for the same quantity,…

Q: You observe that sugar dissolves more quickly in hot teathan in iced tea. You state that higher…

A: An unexplained situation for whom a solution is suggested that is not acceptable by a scientific…

Q: A certain data set has low accuracy, but high precision. Which of the following statements about…

A: There is very little random and systematic error. Because random error causes one measurement to…

Q: An experiment was performed to look at how density changes when t he ratio of water and ethanol was…

A: Since there are multiple sub-parts for this question, we will be answering only the first three…

Q: Approximately 75mL of blood is pumped by a normal human heart at each beat. Assuming an average 72…

A:

Q: Total surface size is dependent on particle size. The smaller the particles are: O smaller the total…

A:

Q: Is it faster to 1) adjust the liquid level to exactly hit a graduated cylinder measurement mark or,…

A: Accuracy is the measurement of the closeness of the value in comparison to its true value. Precision…

Q: When a student was determining the density of their unknown solid, they noticed that there were some…

A: Let volume of solid = V And Mass of solid = M Therefore.,  Density of solid = M/V Due to air bubbles…

Q: Which statement describes the relationship between microscopic and macroscopic phenomena? O…

A: Macroscopic phenomena are the process or activities that can be observed , experienced or measured…

Q: Calculate the mass in kilograms of a 1.70 kg object when its velocity, relative to us, is each of…

A: Given: Mass of object=1.70 kg Velocity of light=3×108 m/s To calculate: Mass at different velocity

Q: on average a drop of water has a volume of 50.0 microliters. What is this volume in dekaliters?…

A: Given :- volume of a drop of water = 50.0 microliters  To convert :- given volume to decaliters…

Q: At a resting pulse rate of 7777 beats per minute, the human heart typically pumps about 7575 mL of…

A: The density of object is calculated by the formula, Where, m is the mass of an object. V is the…

Q: Given the quantity of corn syrup (d = 1.4 kg L^-1) needed for many industries. It should be no…

A: d = 1.4 kg L-1 mass is 2.290 x 105 lbs =103872.653 kg = 1.03872653 X 105 Kg  11.12m long-cylindrical…

Q: Aling Puring has a sari-sari store and one of her bestselling products is “yelo” or iced water in a…

A: Her observations are valid because refrigerator takes less time to form yelo during rainy seasons.

Q: A 10.00mL sample of liquid is added to a flask with a mass of 90.05g. The mass of the flask and…

A: Given, Volume of liquid =10.0 mL mass of flask =90.05 g mass of flask and liquid =98.0 g

Q: The density of pure water is 1g/cm3 .so in order for the cylinder to float its density must be less…

A: Given that, Density of pure water = 1 g cm-3 Density of cylinder = less than 1 g cm-3

Q: Total surface size is dependent on particle size. The smaller the particles are: smaller the total…

A: We know  that as the size of the parcticle decreases, total surface area of the particle increases

Q: Two students determine the percentage of lead in a sampleas a laboratory exercise. The true…

A:

Q: 1. A cup of water containing an ice cube at 0°C is filled exactly to the brim (so that a single…

A: To answer this question , we will consider the fact about density of liquid water and ice.

Q: a. There are 365 days/year, 24 hours/day, 12 months/year, and 60            minutes/hour. How many…

A: Since you are posted with multiple questions. As per the rule, I am answering the first question…

Q: dified True or False tions: Write CHEMISTRY if the statement is correct, if otherwise, change the…

A:

Q: A vial is filled with chloroform (d = 1.48 g/mL), mercury (d = 13.53 g/mL) and water (d = 1.00…

A: The substance with the high density will form the lower layer and the substance with the least…

Q: Compressible is a classification of matter, where its molecules are existing separately from each…

A: A solid cannot be compressed much because its particles are already very closely packed and there…

Q: The mass of a glass beaker is known to be 24.4 gg. Approximately 5 mLmL of water are added, and the…

A: Given, mass of a glass beaker = 24.4 g

Q: Real-World Chemistry 1. Suppose you wanted to ship bananas from Puerto Rico to New York and the time…

A: It is given that the bananas need to be shipped from Puerto Rico to new york which takes 8 days.…

Q: If the average American throws away 4.5 lb of trash each day, and the population of the US is…

A: Given: Population of US is 311 million. Amount of trash thrown by an American is 4.5lb.

Q: Now it's time to create, analyze and interpret a Chemistry-based graph! Let's do this in steps. Data…

A: a) solubility vs temperature b) y axis - solubility (g NaCl/100 g of H2O) c) x axis - temperature…

Q: The density of air at ordinary atmospheric pressure and25 °C is 1.19 g>L. What is the mass, in…

A: Density is the ratio of mass with respect to volume and it is given as  Density (D)= Mass (M)Volume…

Q: Determine if the following mixtures are homogeneous or heterogeneous. Explain why they are…

A:

Q: that are highlighted: 2. Data Table Identity of Dehydrated salt (for afterwards) Mass of empty dish…

A: Given : mass of empty dish and mass of dish + hydrated salt  To find : mass of hydrated salt, mass…

Q: How do I solve this? I do know that it is linear.

A: Using the given data, graph can be drawn by plotting p H against volume of base and is given below:

Q: The city of Los Angeles is approximately 2400 miles south of Alaska, slowly moving northward along…

A: Given information,    The city of Los Angeles is approximately 2400 miles south of Alaska. Los…

Q: 1.23 Which separation method is better suited for separating asolution of sugar and water into pure…

A: We know that the given solution mixture that is solution of sugar and water  is a homogenous…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.