Which arrows represent carbon dioxide entering the atmosphere because of the use of fossil fuels?
QUESTION POSTED AT 18/04/2020 - 06:33 PM
Answered by admin AT 18/04/2020 - 06:33 PM
I just took the same quiz its 1
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QUESTION POSTED AT 01/06/2020 - 04:45 PM
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QUESTION POSTED AT 01/06/2020 - 04:13 PM
The molar masses of three gases, A, B, and C, are 4 grams, 16 grams, and 32 grams respectively. Which sentence represents the effusion rates of these gases? A). A < B < C B). C < B < A C). B < C < A D). B < A < C
QUESTION POSTED AT 01/06/2020 - 04:05 PM
Which arrows represents the phase transitions in which he's energy is gained
QUESTION POSTED AT 01/06/2020 - 04:03 PM
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QUESTION POSTED AT 01/06/2020 - 03:57 PM
What is the common name of solid carbon dioxide
QUESTION POSTED AT 01/06/2020 - 03:51 PM
Lease select the word from the list that best fits the definition The ______ parts of organisms are most likely to become fossils.
QUESTION POSTED AT 01/06/2020 - 03:31 PM
Use the chart to determine which atom in the carbon–chlorine bond is assigned the delta negative charge. A.carbon atom B.chlorine atom C.neither atom D.both atoms
QUESTION POSTED AT 01/06/2020 - 03:06 PM
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QUESTION POSTED AT 01/06/2020 - 02:51 PM
If you have a 2.50 mole sample of a substance, how many representative particles does this represent?
QUESTION POSTED AT 01/06/2020 - 02:36 PM
After 17.1 thousand years, what percentage of the original carbon-14 would be left in an organisms remains?
QUESTION POSTED AT 01/06/2020 - 01:49 PM
Write a balanced chemical equation for the photosynthesis reaction in which gaseous carbon dioxide and liquid water react in the presence of chlorophyll to produce aqueous glucose (c6h12o6) and oxygen gas.
QUESTION POSTED AT 01/06/2020 - 01:37 PM
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QUESTION POSTED AT 01/06/2020 - 01:32 PM
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QUESTION POSTED AT 01/06/2020 - 01:25 PM
A compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen (by mass). calculate the empirical formula.
QUESTION POSTED AT 01/06/2020 - 01:12 PM
Combustion analysis of an unknown compound containing only carbon and hydrogen produced 0.2845 g of co2 and 0.1451 g of h2o. what is the empirical formula of the compound?
QUESTION POSTED AT 01/06/2020 - 12:50 PM
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QUESTION POSTED AT 29/05/2020 - 05:09 PM
Two substances that have the same number of moles of representative particles always have: the same number of atoms the same masses the same weights None of these are correct.
QUESTION POSTED AT 29/05/2020 - 05:07 PM
\Based on the reading, what are the properties of carbon-14? Check all that apply. Carbon-14 is a naturally occurring carbon isotope. Carbon-14 has a known half-life. Carbon-14 decays completely within 1,000 years. Carbon-14 is not radioactive. Carbon-14 is present in all living organisms.
QUESTION POSTED AT 29/05/2020 - 03:35 PM
What is the correct way to represent 5600 L using scientific notation ??
QUESTION POSTED AT 29/05/2020 - 02:57 PM
What is the empirical formula of a compound containing carbon, hydrogen, and oxygen in the ratio 14:42:84? C14H42O84
QUESTION POSTED AT 29/05/2020 - 02:45 PM
The element carbon (C) is most likely to form covalent bonds with the element
QUESTION POSTED AT 29/05/2020 - 02:34 PM
Analysis of a sample of a covalent compound showed that it contained 14.4% hydrogen and 85.6% carbon by mass. what is the empirical formula for this compound?
QUESTION POSTED AT 29/05/2020 - 02:18 PM
When aqueous solutions of potassium carbonate and silver(i) nitrate are combined, solid silver(i) carbonate and a solution of potassium nitrate are formed. the net ionic equation for this reaction is:?
QUESTION POSTED AT 29/05/2020 - 02:14 PM
Nitric oxide, no, is made from the oxidation of nh3, and the reaction is represented by the equation 4nh3 + 5o2 ? 4no + 6h2o an 9.5-g sample of nh3 gives 12.0 g of no. the percent yield of no is :
QUESTION POSTED AT 29/05/2020 - 02:06 PM
When heated, solid copper(ii) carbonate decomposes to solid copper(ii) oxide and carbon dioxide gas. give the balanced chemical equation (including phases) that describes this reaction?
QUESTION POSTED AT 29/05/2020 - 02:05 PM
A particular compound contains, by mass, 25.5 % carbon, 40.4 % fluorine, and 34.1 % oxygen. a 0.050-mol sample of this compound weighs 9.40 g. the molecular formula of this compound is:
QUESTION POSTED AT 29/05/2020 - 02:00 PM
Using the periodic table, determine which material is most likely to be a good conductor. A. sodium B. bromine C. carbon D. oxygen
QUESTION POSTED AT 29/05/2020 - 12:54 PM
Which unit represents 0.01 liters? A.kiloliters B.milliliters C.centiliters D.decaliters ( i think its D. maybe not, give me answer:) )
QUESTION POSTED AT 29/05/2020 - 12:20 PM