Chemistry

Mi One should know the properties of the components of the mixture to separate it. Explain with an example.
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How many elements have properties of both metals and non-metals?
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3. You have a rock with a volume of 15cm3 and a mass of 45 g. What is itsdensity? 3000 kg/m3
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When measuring the volume of an object you are finding the?A. Single dimension of an objectB. Amount of 2 dimensional space an object coversC. Amount of 3 dimensional space the object occupies D. Amount of 4 dimensional space an object occupies
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A complete reaction indicated by the chemical equation below produces 79.0 g of sulfur. Estimate the number of hydrogen atoms found in the amount of water that forms as a second product in this reaction.2 H2S(g) + SO2(g) 3 S(s) + 2 H2O(l)a. 1.98 10^24 atomsb. 4.80 10^23 atomsc. 6.40 10^25 atomsd. 1.02 10^26 atomse. 3.00 10^24 atoms
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Explain how you can obtain hydrated sodium sulphate crystals from an aqueous solution of sodium sulphate
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What is the signifcence of H, 2H, 3 H, H2, 2 He, Na,Snaco, ouco, CO, 460?
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explain dehydrogenation
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Which of the following examples shows an increase of energy in the particles of matter? (Select THREE that are true)liquid to solidliquid to gasgas to liquidOOOsolid to liquidsolid to gas
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Water and carbon dioxide being converted to glucose aChemical Change bPhysical Change
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is clarity a physical or chemical property?
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Please help!Best answer with explanation will be marked brainliest.
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How many square centimeters are in an area of 5.90 inch^2 ?
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Identify the 3 types of variables for each example experiment below, and then provide an explanation as to why you identified the variables in the way that you did. The variables include the following: independent variable, dependent variable, and the control variable. Example 1: You would like to add some depth and charm to your garden by adding different sized plants to your garden. Youve done some research and would love to plant chimney bellflowers because of their appeal and height. One of the questions that comes to your mind is which brand of fertilizer to use in order to produce the tallest bellflowers? Example 2: Your younger brother has asked that you help him with his 5th grade science fair project. One of the areas he is interested in knowing more about is acid rain. You decide to simulate acid rain by creating an experiment that involves vinegar and limestone chips. You and your brother decide to determine if the amount of vinegar will impact limestone chip mass. You set up four different treatments. Each treatment will contain a different percentage or concentration of vinegar but with the same initial mass of limestone chips. You both make a hypothesis and discuss how it relates to acid rain together, and then illustrate the results on a trifold board. Example 3: In your biology class, youve learned a lot about marine ecosystems. It has created an interest in maybe one day being a marine biologist. Youve decided that you will design an experiment that looks at the impact of rising sea temperature on the quantity of algae in a specific ocean site. You will determine the number of algae under varying temperatures at this ocean site. You are hoping that these findings will help you become more of an advocate for marine life in this time of global climate change. NEED ASAP I WILL GIVE Brainliest
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Do experiments always turn out asexpected? Why or why not?
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Which of the following does the atomic number of an atom represent? (1 point)o the number of neutrons in the atomO the number of particles outside the nucleus of the atomO the number of protons in the atomo the number of particles in the nucleus of the atom
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A photon of 498nm was emmited from a silicon atom. Calculate the energy of all the atomic levels of silicon and show that The atomic levels are quantized
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In what condition do iodine and phosphorus react?
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Which property of manganese dioxide helps it turn hydrogen peroxide into water faster than it would without it?A. Manganese dioxide is an acid.B. Manganese dioxide is a catalyst.C. Manganese dioxide is highly reactive.D. Manganese dioxide is used up very fast.
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Please solve these two QUESTION .its my ASSIGNMENT
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How old is a piece of cotton cloth if the half-life of carbon-14 is 5,730 years, and the carbon-14 composition of the cloth is 22 percent that of living plants?
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32,235 kg/1991 m3 solve in scientific notation
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Plant and Animal CellsBF1 20 pointsWhich letter represents the brain of the cell? BHHWhyEDG
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Max puts cereal in a bowl and pours milk over it. Which term best describes Maxs bowl of cereal?A. pure substanceB. homogeneous mixtureC. heterogeneous mixtureD. compound
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