Chemistry

what is the formula for water
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A 20 g granite boulder absorbs 300.2 Joules of energy from the Sun, resulting in its temperaturechanging. Calculate this temperature change
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How many moles of CO2 are in 54.3 g of CO2 ?
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Identify the Lewis acid in this balanced equation: SnCl4 + 2Cl SnCl62
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how many atoms in 1kg of platinuma 2.5x10^24b 3.1x10^24
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what is the most important part of solution preparation
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Two sugars are epimers of each other. Is it possible to convert one to the other without breaking covalent bonds? Why? a) For chiral molecules with adjacent stereocenters, such as monosaccharides, a coordinated set of bond rotations can reverse th stereocenter. b) For molecules with fourbr more stereocenters, the two epimers can interconvert by selected bond rotations c) Rotation around bonds will not alter the chirality of a stereocenter ) d) A sing le rotation around each of two specific bonds of a stereocenter will alter the chirality at that stereocenter.
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Questions:1. Are humans getting plastic only from seafood? Explain:2. Why is it difficult to say that plastics are directly causing illnesses?3. What could be some of the negative effects of plastics on thehuman body?4. Why is the scientist Shanna Swan worried about the future ofhumankind?
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How deep below Earth's surface do rocks melt?A. 1000 kmO B. 50 mC. 500 kmD. 50 km
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One city is located north of the equator and experiences average rainfall and warm temperatures. Another city is located exactly the same distance from the equator, but south. How will these two climate areas be the same or different? (2 points)a. The temperature and precipitation will both differ.b. The temperature and precipitation will be similar.c. The temperature will differ but the precipitation will be the same.d. The precipitation will differ but the temperature will be the same.
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Question is in picture
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A- southB- north C-westD- east Help ASAP no links or Im reporting
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ANSWER ASAP Please! How do groups and periods differ? What trend specifically occurs in either?
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Which pieces of equipment areneeded to calculate the velocity of afalling object?A stopwatch and balanceB speedometer and magnetC compass and tape measureD tape measure and stopwatch
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What volume (in mL) of concentrated HCl (12 M) is needed to make 1500 mL of a 3.5 M solution?
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Use the drop-down menus to answer the questions.Which organism begins this food chain and is a producer? Which organism gains energy from eating the frog? Which organism has the most available energy in this food chain?
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PLEASE HELPPP WILL GIVE 10 PTS AND MARK BRAINIEST TO RIGHT ANSER!!!!!Roasted coffee beans contain over_____________ chemical compoundsA) 10000000B) 1000000C) 1000D) 10000
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A 25.0 mL sample of HCI reacted with 20.0 mL of 2.00 M NaOH. What is the molarity of the HCI? HCl(aq) + NaOH(aq) > NaCl(aq) + H2O(l)really need help!
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Consider the reaction of tin with potassium hydroxide and water. Sn (s) 2KOH (aq) 4H2O (l) K2Sn(OH)6 (s) 2H2 (g) Determine the limiting reactant in a mixture containing 122 g of Sn, 134 g of KOH, and 63.9 g of H2O. Calculate the maximum mass (in grams) of potassium hydroxystannate, K2Sn(OH)6, that can be produced in the reaction. The limiting reactant is:
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Use words from the box to complete the sentences.fungi pathogen poison vaccine virus(a) A bacteria that can cause a disease is an example of a..................................(b) An obligate parasite that must inhabit a host cell to reproduce is a ...................................
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A student did not read the directions to the experiment properly and mixed up where to place the NaOH solution and the vinegar. He put the vinegar in the titrator and the measured amount of NaOH in the beaker. He then added a drop of the phenolphthalein to the solution in the beaker. Does the student need to empty out all of the solutions and start over again or can he go ahead and run the titration? If he runs the titration using the solutions as given above, what should he expect to see happen for results?
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pick one answer please do not put any links just type the answer
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The boiling temperature of water is directly related to the atmospheric pressure. At sea level, the atmospheric pressure is 760 torr whereas the boiling temperature is 100equationC. If the atmospheric pressure is lower than 760 torr, then the boiling temperature will be less than 100equationC. If the atmospheric pressure is higher than 760 torr, then you would expect the boiling temperature to be higher than 100equationC. At higher elevations, the atmospheric pressure is lower resulting in a lower boiling temperature. For example: Denver, CO experiences a boiling temperature at ~ 94equationC. If you were conducting an experiment that involved boiling water, what would you expect the boiling temperature to be if the atmospheric pressure was 790 torr
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How do i calculate speed and find the direction of a moving object
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