Chemistry

In 2005, scientists used cells from a dog named Tai to produce a new puppy with DNA identical to Tai's.What genetic technology was used?
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Al2(SO4)3 + 6 K --- > 3 K2SO4 + 2 AlIn an experiment, 46.8 grams of aluminum sulfate is reacted to make how many grams of potassium sulfate?
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how many molecules are there in 0.45 moles of so3
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Elements are organized on the table according to their _____________ ___________ , usually found near the top of the square.
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How many moles are in 20.0g of lithium?
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Which statement describes a chemical property of sodium A Sodium changes from a solid to liquid at a temperature of 97.8CB Sodium has the ability to react with chlorine and from a new substance.C Sodium has destiny if 0.97 g/cm3.D Sodium takes the form of a solid at room temperature
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A certain first-order reaction has a half-life of 20.0 minutes. How much time is required for this reaction to be 75% complete?
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Need QUICK ANSWERS!!!!!!!!!!!!!!!!!!
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Which group of microorganisms has the ability to mutate?
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The inflation of airbags is due to the breakdown of a single chemical substance into two separate substances.Two molecules of sodium azide (NaN3) break down into sodium (Na) and nitrogen gas (N2) during the reaction.How many sodium (Na) atoms are produced in the reaction?1 Na atom2 Na atoms3 Na atoms
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PLEASE HELP!! Is this an element or compound?copper (ll). oxide (CuO)Please hurry!!
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Given the reaction3 H3PO4 + 2 Ba(OH)2 BaPO4 + 6 H20How many grams of precipitate could you make if you reacted 286.0 mL of 3.000 M H3PO4 with 855.0 mL of 1.400 M Ba(OH)2
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YesOONoBalanced or Not Balanced? *2 NaCl + 2 F2 2 NaF + 1 C12YesNo
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What is the concentration of a 22.35 L solution that contains 9.95 moles of sodiumacetate? Round your answer to the correct number of significant figures.
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Fossil fuels are made up of organisms that died millions of years ago. Which best describes this source of energy
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Analysis: Consider Joe's story. IF the test shows he does have Marfan syndrome, and if he inherited the Marfan gene from his mother, does this mean that his brother and sister also have it? You may want to draw up a Punnett Square or drawing to help you explain your answer. HINT: Is there any suggestion that he got a Marfan gene from his father?
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Use the solubility rules from the Lab 4 introduction and your knowledge of qualitative separation schemes from the lab to answer the following questions. The qualitative analysis experiment you did is actually an abbreviated version of a much larger analysis scheme in which many different cations are separated and identified. Suppose a mixture contains Ag , K , NH4 , Hg22 , Pb2 , Mg2 , Sr2 , Ba2 , Cu2 , Al3 and Fe3 . (a) Which of the following ions could you separate, by causing them to precipitate, with the addition of HCl?Ag+ K+ NH4+Hg22+ Pb2+ Mg2+Sr2+ Ba2+ Cu2+Al3+ Fe3+ (b) After the addition of HCl, the above sample is centrifuged and decanted. Which of the following cations remaining in the supernatant could you separate, by causing them to precipitate, with the addition of H2SO4? (Hint: H2SO4 is a source of sulfate ions. Select all that apply.)Ag+ K+ NH4+Hg22+ Pb2+ Mg2+Sr2+ Ba2+ Cu2+Al3+ Fe3+
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identify the conjugate acid-base H20 (i) + CH3NH2(aq) > OH-(ag)+ CH3NH3-(ag)
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Which of the following could not be an empirical formula? a CH4 b Na2O c NaCl d H2O2
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Zinc metal reacts with copper sulfate through the followingreaction:Zn + CuSO4 Cu + ZnSO4The percent yield for a reaction in which 32.5 g of Zn is reactedin excess CuSO4 solution is 85.0 %. What is the actual yield ofcopper of this reaction?g
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Which of this is formed when a metal reacts with steam ? *Carbon dioxideA SaltAn oxideA metal hydroxide
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8. The most common element used in nuclear fission reactors is uranium. The three nuclides, U-233, U-235, and U-238, are isotopes of uranium because they have the same number of protons per atom and...* (1) the same number of electrons per atom (2) the same number of neutrons per atom (3) a different number of electrons per atom(4) a different number of neutrons per atom
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True or false: Heterotrophs need to go find and eat food.?:FALSE:TRUE
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The unique shape of DNA allows what
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