05/31/21

When writing chemical equilibrium you do NOT include which two states of matter ____ and ____.
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05/30/21

Please help me with this Chemistry question.

A 5.0 gram sample of a radioactive element was formed in a 1960 explosion of an atomic bomb at Johnson Island in the Pacific test site. The half-life of the radioactive element is 28 years. How... more
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05/30/21

I'm really struggling with this Chemistry problem. Can someone please help me with this?
When 45.0 mL of 4.8 M HCl reacts with an excess of Mg(OH)2, how many grams of Magnesium Chloride (MgCl2) are produced, given the unbalanced equation HCl + Mg(OH)2 → H2O + MgCl2?A. 0.11 molesB. 0.11... more
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05/30/21

Can someone please help me with this Chemistry problem?
600.0 mL of H2SO4 is titrated with a 6.0 M solution of NaOH and requires only 6.8 mL of NaOH to reach the endpoint. According to the unbalanced equation H2SO4 + NaOH → H2O + Na2SO4, what is the... more
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05/29/21

For the reaction 4A(g) + 3B(g) 2C(g) tl1e following data were obtained at constant temperat 11re:
Experiment Initial Rate ( mol/L·min) Initial [A ] (mol/L) Initial [B] (mol/... more
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05/29/21

HOW DO I SOLVE this question
How many moles of gas are in a breath of 20.1 L at a temperature of 21.3 C and a pressure of 1.2 atm?
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05/28/21

Which of the following statemnts is true regarding the reaction given below? H2 + Cl2 → 2 HCl
aIf 1 mole of H2 is consumed, 1 mole of HCl is produced bIf 2 mole of H2 is consumed, 1 mole of HCl is produced. cIf 1 mole of Cl2 is consumed, 2 mole of HCl is porduced. dIf 2 mole of Cl2 is... more
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05/28/21

Please help me with these Chemistry questions.

Radioactive Decay GraphAnswer these three questions about the graph. Approximately what percentage of the isotope remains after 80 days?What is the half-life of the isotope shown on the graph?How... more
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05/28/21

Stoichiometric Calculations
C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g). Using your balanced equation, If 15 moles of Propane Gas (C₃H₈) react with excess Oxygen gas, how many moles of water will be formed?
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05/28/21

please help me with this chemistry solutions problem

Which of the following solutions will be the best conductor of electrical current?A. ethylene glycol, C2H6O2(aq)B. potassium chloride, KCl(aq)     C. methyl alcohol, CH3OH(aq)D. bromine, Br2(aq)E.... more
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05/28/21

please hep with this honors chemistry solutions problem
A solution component present in lesser quantity than the solvent is called a(n)A. soluteB. mixture    C. diluentD. alloy.
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05/28/21

please help me with this solutions problem for honors chemistry
Which of the following solutions will be the poorest conductor of electrical current?A. sulfuric acid, H2SO4(aq)B. lithium hydroxide, LiOH(aq)     C. sodium chloride, NaCl(aq)D. potassium nitrate,... more
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05/28/21

Examine the following reaction equation and fill in the blanks
KBr+ Cl₂→ KCl + Br₂ 1-What is the oxidizing agent?2-What is oxidized? 3-What is reduced?4-What is reducing agent?
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05/28/21

Would measuring the dimensions of a solid always be possible? Explain.
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05/28/21

What amount of heat, in kJ, is required to convert 1.00 g of water at 67.0 °C to 1.00 g of steam at 100.0 °C? (specific heat capacity of water = 4.184 J/g • °C; ∆Hvap = 40.7 kJ/mol)
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05/28/21

Brass has density of 8.40 g/cm 3 and heat, 0.385 J/g°C. A 15.2 cm 3 piece brass at 163°C is dropped in a container with 150.0 g water at 22.4°C. Find the final temperature of the brass-water mixture?
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05/28/21

The heat of solution of NaOH is -44.5 kJ/mol NaOH. find maximum temperature, originally at 21°C, be raised in the preparation of 500 mL of 7.0 M NaOH? Has density of 1.08 g/mL and heat of 4.00 J/g°C.
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05/28/21

1.397 g sample of thymol, C 10 H 14 O (s), is burned. The temperature increase is 11.23°C, and the heat capacity of bomb is 4.68 kJ/°C. What is the heat of combustion of thymol, in kJ/mol C 10 H 14 O?
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05/27/21

The illustration to the left represents a mixture of nitrogen ( blue ) and hydrogen ( light blue ) molecules.
Please help me understand it algebraically through conversion factors, I am not familiar with the logicIf the molecules in the above illustration react to form NH3 according to the... more
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05/27/21

Can Volume of a Container Affect Reaction Rate for liquid solution?
By reducing the size (volume) of a container, can this affect the reaction rate for a solid + (aq) reactants?
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05/26/21

Magnesium carbonate + hydrochloric acid = magnesium chloride + water + carbon dioxide
What can you do to get a sample of solid magnesium chloride from the solution?
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05/26/21

A solution of silver sulfate is combined with a solution of barium nitrate.
a) Determine if a precipitate will form in this mixture, and if a precipitate does form, name the compound. b) Write the balanced molecular, ionic, and net ionic describing this process.
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05/26/21

If a piece of iron is placed in a solution of silver nitrate, will a single replacement reaction occur? Explain why or why not.

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05/26/21

A chemist heats 27.5g of glacial acetic acid, Ch3COOH (a liquid). Determine the temp. increase that will occur if 725J are added to the liquid.
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05/26/21

Chemistry question please if anyone can help I really need it
___NH3+___O2----> ____ NO +____H2O In an experiment 5.03g of NH3 are allowed to react with 8.78g of O2 . Write the formula of the limiting reagent ANSWER ____ 2 How many grams of NO are formed... more
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