Master Chemistry with Fun Quizzes & Brain Teasers!

How many elements are there in CH3 CH2COONa
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WILL GIVE BRAINLIEST: Carbon-14 dating is used to find the age of ancient objects. The half-life of Carbon-14 is 5730 years. If a piece of a clay pot is found to have undergone 1.5 half-lives, about how old is the potshard?
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Give two examples of leaves that we eat
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How are transuranium elements made?
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3. You have 28.5 grams of Carbon. How many atoms is this?
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why unit of force is derived unit?
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Any environmental concerns about the use of flerovium
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In n=6 the correct sequence for filling of electron will be
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Scientists' belief that an atom is a solid sphere, is good enough to explain; PLZ I HAVE LESS TIME!!!!
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what is agriculture
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X has a fixed melting and boiling point while Y does not. Which of the following statements about X and Y is correct?A: X is an element or a compound while Y is a mixture.B: X is an element while Y is a compound or a mixture.C: X is a mixture while Y is an element or a compound.D: X is a compound while Y is an element or a mixture.
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What do all the organelles endoplasmic reticulum and nucleus so far have in Common
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which of the following molecules has a shape is trigonal pyramid?ccl4ch2oNh2oh2o
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13Which one is heavier? 1 mole of Pbd,, 1 moleof H, and 1 mole of Pb(NO3)2A. Pbd. ,C. None of themD. Pb(NO3)2
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in acidic medium dichromate Ion oxidized ferrous sulphate to ferric sulphate and and it self reduced to chromium 3 + ions write a balanced equation to represent this this redox reaction use Ion electron method
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How will you convert Aniline to Parabromo-Phenol
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The melting and boiling points of quartz are very high because of the compounds ____________________.
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1.Which of the following is the nature of sound wave?
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For determining the toxicity of different compounds, the concept of LD50, the lethal dose for 50% of test subjects is used. The LD50in rats for potassium cyanide is 1.52mg per 1 kg of body weight. Assuming the same LD50for humans, determine the molarity of potassium cyanide in a 355 mL (12 ounces) drink that would correlate to the LD50for a person having a mass of 170.0 lbs.
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How many mL of a 1.50 M solution of cobalt(III) sulfate are required to make 400.0 mL of a 0.850 M solution of cobalt(III) sulfate? Determine the molarities of the ions in 1.50 M cobalt(III) sulfate.
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common element in all the organic compound another than hydrogen is
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What element has the following electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d8?
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What instrument should be used to find liquid volume?I'm not sure if this would be described as chemistry or not but it's the closest to science.
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RESWhich of these data come from reliable sources? Check all that applythe scientific name of an organism listed in an encyclopediaO a list of medical statistics written in a magazine advertisementsolar activity data reported by NASA on its websitethe behavior of a species described in a science fiction novelthe behavior of a species described in a professional journal
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