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- a) write the formula unit of calcium fluoride.b) A certain mass m of calcium fluoride contains 1.2*1023 anions. Deduce the mass (m). NA= 6.02*1023
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- a) write the formula unit of calcium fluoride.b) A certain mass m of calcium fluoride contains 1.2*1023 anions. Deduce the mass (m). NA= 6.02*1023
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1. Define the two parts of the word polymer, and give a literal definition of polymer.2. Describe two properties of polymers that depend on their long-chain structure.3. Name three items that consist of or contain polymers.
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Construct an explanation using Newton's Laws of Motion to describe the effects of balanced and unbalanced forceson the motion of an object.
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State two factors on which the potential energy of a body at a certain height above the ground depends.
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you have a sample of 23.8 g of C2H6. how many moles of C2H6 are in the sample?Be sure to show your work and each step is writing out clearly.
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What is the scientific explanation behind why room temperature mugs become warm when filled with warm water and why room temperature water becomes warm when poured into warm mug? (How is energy transferred?)
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Someone PLEASE help me I dont remember this.
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Which would most likely result in low oxygen levels in the blood?
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In the chemical reaction shown above, 10.8 g of products were obtained. How many grams of reactants were used?
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if you were one of the immigrants, would you willingly submit to have yourself undergone x-ray to prove yourself being a minor? why or why not?
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How many molecules of ammonia are produced from the reaction of 9.5 * 10^{23} molecules of nitrogen are reacted with excess hydrogen gas?
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how do substances change into different substances during chemical reactions
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A bar of snickers contains 28 g of sugar (C6H12O6)
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The use of genetics by farmers to produce more abundant and healthier crops is an application of the science of _____.DNA profilingbiotechnologymolecular biologynuclear genetics
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how could you check that when the calcium carbonate is reacting with hydrochloric acid the gas given off is carbon dioxide
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Please help it really important, I will mark brainliest please
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If you have a 1234 gram sample of C4H7NO4, how many gams of Carbon wouldbe present?
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The chromosomes and genes in your feet differ greatly from those in your eyes because they are parts of separate organs.TrueFalse
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aluminum reacts with 42g of iron(ii) sulfate. How many grams of iron are formed?
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Which is a benefit of genetically modified foods?A.When foods are genetically modified, they are always resistant to disease and drought.B.When foods are genetically modified, they no longer need to be studied.C.The cost of research is included in the cost to the consumer.D.The cost of food will decrease, and the quality of food will increase.
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Which of these is the correct definition of genetic modification/genetic engineering?A. Altering the DNA of an organism at the molecular levelB. Choosing individuals to mate based on desired characteristicsC. Observing genetic changes in populations over time based on adaptive traitsD. Extracting stem cells to differentiate into specialized tissues
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What did Bohrs model focus on that Rutherfords model did not?
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