Chemistry

Plz help me I am timed!!!!!
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The reaction for the formation of ammonia is given aN2(g) + 3H2(g) = 21H3(g)write the vate reaction for :a) the formation of NH.6) the disappearance of N and H
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What is a reducing agent?
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How many moles of F2 are required to produced 8.3 moles of HF
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1.Why do you think the agricultural revolution led to more population growth?
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Where are the places these minerals are found: Gold, Limestone and kaiolin.
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A low pitch sound is associated with which of the following?. high frequencyb. low frequency. fundamental toned. low intensityNo links plz
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When discussing evolution, adaptation is *A. An inherited trait evolved through natural selectionB. A skill that an organism has learned to help them surviveC. An adjustment in the physical appearance or behavior of an organism that happens over a short period of time
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Can you use carbon dioxide in the dark
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How many grams (g) are in 4.00 moles of Carbon Dioxide (CO2) ?
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What is the tertiary consumer in this food chain?A hawkB lettuceC snailD thrush
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DQuestion 2What is the purpose of looking at chemical reactions?to classify the type of reaction it isto identify the type of reaction it isto see how elements rearrange and represent something elseall of the above
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What change in volume results if 75.0 mL of gas is cooled from 100.0 Cto 0.00 C
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Acidic solutions have pH value less than 7 . Select one : O True O False
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How do we designate recessivegenes?A. They are male.B. They are lower case letters.C. They are female.D. They are capital letters.
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Lead (ll) iodide (PbI2) has a solubility of 1.5210 to the -3 mol/L.1. write the dissolution reaction to PbI2 including all states.2. Write the expression for Ksp for Pbl2.3. What is the concentration of Pb2+ in the equilibrium solution?4. What is the concentration of I- in the equilibrium solution?5. Calculate the solubility product of Pbl2.
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Calculate the given mass in 0.5 mol. Of CH4
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A student uses 200 grams of water at a temperature of 60 C to prepare a saturated solution of potassium chloride , KCI. Identify the solute in this solution. 1. H2O(l) 2. KCl (aq) 3.K + (aq) 4.KCl(s)
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Which is the conjugate acid of HSO4
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Calculate the pH of a 0.010 M NaNO2 solution.
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Which expression represents the concentration of OH in solution?a. 1014 / [H3O+]b. [OH] / 1014c. 1014 [H3O+]d. 1014 x [H3O+]
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A chemical change creates a newA-atomB-elementC-substance
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calculate the number of atoms in 112 g of iron.
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Some rocks are more resistant to acid rain than others.True or False
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