Chemistry Homework Help: Answers & Questions

• The atomic number tells you the number of Neutrons an atom has

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• Hello, I need this Inorganic Chemistry homework done by 10:30 EST today.

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• Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water.what mass of water will be required to react completely with 4 g of hydrogen gas and 34grams of oxygen gas?

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• Is it possible to have a reaction where Kc=Kp?

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• Consider the balanced equation. PCl3 + 3H2O H3PO3 + 3HCl What is the percent yield of HCl if 42.0 g of HCl are produced from the reaction of 62.0 g of PCl3? Use .

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• Draw a visual representation that shows the interactions between the solute and solvent in an aqueous solution of potassium bromide.

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• 1. Toluene, C6H5CH3, is oxidized by air under carefully controlled conditions to benzoic acid, C6H5CO2H, which is used to prepare the food preservative sodium benzoate, C6H5CO2Na. What is the percent

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• ) A buffer solution is made by mixing 27.0 mL of 0.14 M HCN with 33.0 mL of 0.095 M NaCN. Calculate the pH of the solution. Determine the change in pH of this solution if 12.0 g of NaCN were added t

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• I need help with practical assignment 3(last practical that was due on the 11 October) I need help with question 2.

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• Write the reaction you chose (you may use the equation editor if you like). Be sure the reaction is balanced and includes states of matter (phases). How would you classify this reaction? Is there mo

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• Can I please have clear and concise explanations. I need help with practical assignment 3 question 2

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• Can I please have help with practical assignment 3 question 2. I need clear explanations and mechanisms related to this question. Everything should be in order including names of regeants used, solven

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• Please answer the question 1-4 on the attachment files.

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• Why liquids tends to minimize its surface area? suggest any three reasons

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• Answer these questions below. 1. What is your academic program or career goal? 2. Write the reaction you chose (you may use the equation editor if you like). Be sure the reaction is balanced an

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• How do I calculate the mass of a gas collected?

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• How many milliliters of water at 23 C with a density of 1.00 g/mL must be mixed with 180 mL (about 6 oz) of coffee at 95 C so that the resulting combination will have a temperature of 60 C? Assume

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• How many atoms or molecules are in 5.0 moles of the following? a) O b) N c) MgCl2 d) C2H3NO

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• What volume will 2.50 mol of hydrogen (H2) occupy at -20.0 °C and 1.5 atm?

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• Write the net ionic equation for the precipitation reaction between copper(II) nitrate and ammonium sulfide.

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• An amount of a radioactive isotope is allowed to decay. It had a half life of 10 years if the sample is allowed to decay for 30 years what fraction of the isotope will remain?

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• Please answer all six questions in your own words. Do you believe intelligence is a fixed trait? Either you are smart, or you aren't?Describe a time in your life when you regret not trying something,

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• Important Information A carat is equivalent to exactly 200 mg Sugar has a density of 1.59 g/cm3 A diamond is made entirely of carbon

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• Background Information Mary Poppins said a spoonful of sugar (1 tsp) makes the medicine go down. Marilyn Monroe said diamonds are a girl’s best friend. So in other words, diamonds and sugar make eve

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• 20. The density of liquid water is 0.997 g/mL at 25°C. a. Calculate the mass of 250.0 mL (about a cupful) of water. b. How many moles of water are in 250.0 mL of water? Hint: Use the result of (a). c.

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• The concentration of an H2C2O4 solution is determined by titrating it with a 0.1968 M solution of permanganate. The balanced net ionic equation for the reaction is shown below.In one experiment, 24.98

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• Calculate the ionization energy (eV) for a 'hydrogen-like' atom with one electron and Z = 3 from the excited state of n=2.

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• Find the density of a block with the measurements h = 2.63 cm, w= 1.34 cm, h = 2.57 cm, and mass = 63.22 g. Round your answer to the correct number of sig figs

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• Look at attached files, Can anyone handle the assignment?

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• Maya made this picture to represent a chemical reaction: The two overlapping circles Maya made this picture to represent a chemical reaction: There are two overlapping circles on the left, one white a

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• - A very short and simple first year chemistry experiment of Chemical Detective work - Page 5,6,9,10 only needs to be filled for the experiment

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• 1.Describe the subatomic particles that make up an atom. Include their charge and any contributions to atomic mass (AMU). 2.What subatomic particle is responsible for the Atomic number? 3.Which subat

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• Please fill out the LAB worksheet with the correct answers.

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• A 0.226 g piece of solid magnesium reacts with gaseous oxygen from the atmosphere to form solid magnesium oxide. In the laboratory a student weighs the mass of the magnesium oxide collected from this

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• B) Which of The following compounds will have hydrogen-bonding as intermolecular attractions.

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• Answer all the question above: What is the general bonding rule for oxygen? (Part 1)Consider the Atomic Tiles model of formaldehyde, CH2O on the worksheet. Is it a good model? If so why? If not, why n

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• Can anyone do an abstract & answer these questions in the file attached with NO PLAGIARISM.

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• Thank you in advance.

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• Create three clear research question using fibers as the sample that can be investigated with a microscope that has both FRET and TIRF capabilities & three hypothesis (one for each question) using

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• https://phet.colorado.edu/sims/html/molarity/latest/molarity_en.html

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• Can you complete this Virtual Lab for me before Monday night?

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• What’s the answer and how do I get it

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• which substance has a chemical name ending in - ide? A-H2SO3 B-TiCl4 C- ZnSO4 D- HClO

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• Please answer all the questions with the correct answers in the attachment files.

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• 1. If a car releases 3.2g of sulphur dioxide for every kilometre it travels, what is the mass and volume of SO2 released if the car has travelled 5 KM? [ M.V (room) = 24 dm^5 ] 2. Calculate the maximu

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• Why does a substance gain or loss mass during a reaction

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• The mass number of an atom is 122 amu and the atomic number is 51. How many neutrons are in the atom?

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• How do you do scientific notation

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• A scientist hypothesizes that the temperature at which a turtle's egg is incubated determines the sex of the offspring (whether it will be male or female). What is the independent variable?

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• A machine shop worker records the mass of an aluminum cube as 176 g. If the density of aluminum is 2.7 g/cm3, what is the length of each side of the cube. (Volume of a cube is s x s x s)

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