Master Chemistry with Fun Quizzes & Brain Teasers!

If it's a summer day and you want to take a picnic are you concerned with weatheror climate? Why?
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Select the correct answer.In which location would a free neutron from a decaying U-235 atom be most likely to cause another atom to split?OAin a sample of naturally occurring uraniumB.in a sample of enriched uraniumO C.in a sample of rock or soilD.in the Sun's coreE.in a distant star
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Which represents the balanced nuclear equation for the beta minus decay of Co-60?Superscript 60 subscript 27 upper C o right arrow superscript 60 subscript 26 upper F e plus superscript 0 subscript plus 1 e.Superscript 60 subscript 27 upper C o right arrow superscript 60 subscript 28 upper N i plus superscript 0 subscript negative 1 e.Superscript 60 subscript 27 upper C o plus superscript 0 subscript plus 1 e right arrow superscript 60 subscript 28 upper N i.Superscript 60 subscript 27 upper C o plus superscript 0 subscript negative 1 e right arrow superscript 60 subscript 26 upper Fe.
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A radioactive nuclide is used to detect eye tumors. An atom of this radionuclide contains 15 protons, 15 electrons, and 17 neutrons. Which is symbol of this radionuclide?Superscript 32 subscript 17 upper PSuperscript 17 subscript 15 upper P.Superscript 30 subscript 15 upper P.Superscript 32 subscript 15 upper P.
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Consider the nuclear equation below. Superscript 235 subscript 92 upper U right arrow superscript 4 subscript 2 upper H e. What is the nuclide symbol of X? Superscript 231 subscript 94 upper P u. Superscript 235 subscript 90 upper T h. Superscript 239 subscript 94 upper P u. Superscript 231 subscript 90 upper T h.
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How many neutrons does the isotope N-14 have? 6 7 8 9
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A measurement gave a mass of .34kg. This is the same as 340g
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Which represents the balanced equation for the beta minus emission of phosphorus-32? Superscript 32 subscript 15 upper P right arrow superscript 28 subscript 13 upper A l plus superscript 4 subscript 2 upper H e. Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 14 upper S i plus superscript 0 subscript negative 1 e. Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 16 upper S plus superscript 0 subscript negative 1 e. Superscript 32 subscript 15 upper P right arrow superscript 32 subscript 14 upper S i plus superscript 0 subscript plus 1 e.
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How many ng are there 5.27x10-13 kg
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Using m1v1=m2v2,a 0.5 liters of 12 Molarity solution of NaCl was added to a 2.0 liters of water,find out the final molarity of this 2.5 liter solution
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Define Kelvin's Temperature.
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As a result of the interaction of 22 g of higher oxide of the element of the main subgroup of group IV with water, 31 g of acid was formed. Set the name of an unknown chemical element.
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Photosynthesis occurs in the ____________and cellular respiration occurs in the ___________.Group of answer choices
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The biceps brachii is the muscle that moves the arm up and down.Which type of muscle tissue makes up the biceps?smoothskeletalnonstratedcardiac
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Which multimedia does this ad from the Centers for Disease Controls advertising campaign for the flu vaccine include? (more than one)A.) animationB.) imageC.) textD.) graphE.) chart
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Which is a form of kinetic energy?gravitational energychemical energyelectrical energysound energyDO
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From Earth to space, what is the correct order of the main layers in the atmosphere?
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What is an allele?aA type of cell.bA blood type.A type of mutation.dA variation of a gene.
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Balance the following reaction CS2+Cl2. CCl4+S2Cl2
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How much solute will remain undissolved when 180 g of potassium iodide is added in 100 cm3 of water at 30C?
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what environmental issues occur in our community
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For the reaction 2H(g) + O(g) 2HO(g), what volume of water vapor can be made from 100 grams of oxygen gas and an excess of hydrogen at STP? Please show work.
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If you want to make more shells (CaCO3) then which direction should the reaction proceed?
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What is the molarity of a solution that is made by adding 57.3 g of MgO to 500.0 mL of solution?
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