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Summer

Questions (237)

At the fabric store, Mrs. Hollern bought different amounts of ribbon to make hair bows. The table shows the amount of each type
1. 1 answer
2. 117 views
i need to describe a desolate rock to my feelings how can i describe that in a simile metaphor or more ??
1. 0 answers
2. 135 views
ELA Unit 6B Comparing Texts 2 PortfolioI NEED HELP GUYS!
1. 22 answers
2. 953 views
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Find the area of the
1. 3 answers
2. 454 views
The sum of two numbers is 19 and their difference is 3.
1. 2 answers
2. 390 views
-3y -9 if y equals 8
1. 1 answer
2. 216 views
What aspect of Washington’s location does the Peace Arch monument stand for?A. The Peace Arch commemorates the victory over
1. 1 answer
2. 400 views
Explain 5 civic problems in the society
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2. 638 views
Which type of light has the most neutral tone?Fluorescent Daylight Incandescent Shade I don’t think it is shade or
1. 3 answers
2. 1,457 views
How would I set up an equation to solve for three consecutive odd numbers that have a sum of 9
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2. 313 views
I have finished the questions but i wanted to know if i am correct1) -1.8- 3.9 =5.7 2) -7.5 + 5 =-2 3) -6.1 + 1.7 =7.8
1. 1 answer
2. 220 views
You currently have 12 bottles of water on your shelf and want to keep a minimum level of 6 bottles at a time, you average sales
1. 1 answer
2. 479 views
An inelastic collision occurs between a large truck and smaller sedan. Calculate the final velocity of the objects and explain
1. 1 answer
2. 641 views
Why did business leaders begin the practice of vertical integration?A. Big companies could grow by merging with other companies
1. 1 answer
2. 1,369 views
Suppose a tree on your land has a radius of 3 inches and increases in radius one-fourth inch a year. How many years, y, to the
1. 1 answer
2. 713 views
According to an article by Thomas H. McMahon in the July 1975 issue of Scientific American, a tree’s height varies directly
1. 1 answer
2. 735 views
If the pH of a Ca(OH)2 solution is measured as 9.0, what is the concentration of the Ca(OH)2 solution?1 × 10-5 M 1 × 10-9 M
1. 1 answer
2. 467 views
8 grams of C3H4 gas occupies a volume of 8.2 L at 300 K temperature. Assume ideal gas behavior. The ideal gas constant is 0.082
1. 1 answer
2. 824 views
?? ==> 15/7 N + 0/-1 eWhat is the reactant for this equation? 15/6 C 16/5 B 14/6 C 14/5 B
1. 1 answer
2. 351 views
1125 J of energy is used to heat 250 g of iron. After heating, the final temperature of the iron is measured as 55 °C. The
1. 1 answer
2. 689 views
C(g) + 2A(g) ⇌ 3E(s) + 2F(g)The concentrations of C, A, and F are measured as 0.2 M, 0.2 M, and 0.4 M at equilibrium and at
1. 1 answer
2. 414 views
If 10.0 g of substance X dissolved in 100 mL of solution, and the molarity of the solution is 1.0 M, what is the molar mass of
1. 3 answers
2. 628 views
During a titration experiment, a 130.0 mL solution of 0.02 M hydrogen chloride (HCl) is neutralized by 100.0 mL of unknown
1. 5 answers
2. 760 views
H2SO4(aq) + 2LiOH(aq) → Li2SO4(aq) + 2H2O(l)3.2 moles of LiOH enter the reaction and are fully consumed. The molar mass of
1. 4 answers
2. 2,145 views
X(g)+ 2Y(s) + 3Z(g) ⟶ 2L(g) + 4T(g)If this reaction occurs in one step, what is the order of this reaction? I am not even sure
1. 1 answer
2. 669 views
If 44.25 kJ of heat are released by changing 150. g of liquid mercury to mercury vapor,what is the latent heat of vaporization
1. 1 answer
2. 547 views
A straight-chain alkene with seven carbons has two double bonds and one bromine atom bonded to one of the carbons.Which option
1. 4 answers
2. 824 views
If the standard cell potential of zinc-copper cell is 1.10 V and the reduction potential of Cu is 0.34 V, what is the reduction
1. 1 answer
2. 570 views
If 44.25 kJ of heat are released by changing 150. g of liquid mercury to mercury vapor,what is the latent heat of vaporization
1. 1 answer
2. 579 views
Li^+(aq) + Zn(s) → Li(s) + Zn^2+(aq)How many electrons are transferred in the balanced equation? I came up with an answer of
1. 1 answer
2. 475 views
Which reaction is NOT a redox reaction?CH4+2O2=CO2+2H2O 2Na+CI2=2NaCI AgNO3+NaCI=AgCI+NaNO3 KCIO3=KCI+3/2O2 I chose,
1. 6 answers
2. 693 views
Silicon is an element that is directly below carbon on the periodic table. Silicon can form bonds similar to carbon.Silicon-sili
1. 1 answer
2. 924 views
Which of the following six-carbon molecules can be a straight-chain alkyne with two triple bonds and no double bonds?C6H4 C6H6
1. 1 answer
2. 813 views
A hydrocarbon consists of a benzene ring and two methyl groups. The methyl groups are located at opposite carbons and the
1. 1 answer
2. 1,144 views
Which formula represents a 5-carbon hydrocarbon ring with one double bond?C5H12 C5H5 C5H8 C5H7 I chose C5H8, is this correct?
1. 2 answers
2. 1,091 views
I. C(s) + O2(g) → CO2(g)ΔHf = −394 kJ II. H2(g) + O2(g) → H2O(l) ΔHf = −242 kJ III. 2C(s) + 3H2(g) → C2H6(g) ΔH
1. 1 answer
2. 911 views
Ammonia (NH3) ionizes according to the following reaction:NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH–(aq) The base dissociation
1. 1 answer
2. 2,737 views
NH4Cl(s) → NH3(g) + HCl(g) ΔH°=176 kJ/molAt 25 °C, this reaction has a ΔG° of 91.1 kJ/mol. What is the ΔS° of this
1. 4 answers
2. 3,014 views
CH4 + Cl2 → CH4Cl + HClIs this a double replacement reaction? I believe it is but am not entirely sure.
1. 2 answers
2. 2,037 views
Which reaction is a redox reaction?1. HCI+H2O=H3O^+ +CI^- 2. H2SO4+2KOH=K2SO4+2H2O 3. CH4+2O2=CO2+2H2O 4. Fe^2+ +2OH^- =Fe(OH)2
1. 1 answer
2. 2,087 views
Al(s) + MnO2(s) → Al2O3(s) + Mn(s)When this reaction is balanced, how many electrons are transferred in each half-reaction?
1. 1 answer
2. 2,665 views
Study the two half reactions of an electrochemical cell.Ag(s) → Ag^+(aq) + e^– E^0 = 0.80 V Cu(s) → Cu^2+(aq) + 2e^– E^0
1. 2 answers
2. 629 views
KMnO4 + HCl → MnCl2 + Cl2 + H2O + KClIf the reaction occurs in an acidic solution where water and H+ ions are added to the
1. 2 answers
2. 1,644 views
MnO4^– + SO3^2– + H2O → MnO2 + SO4^2– + OH^–If the reaction occurs in an acidic solution where water and H+ ions are
1. 4 answers
2. 1,664 views
NH4Cl(s) → NH3(g) + HCl(g) ΔH°=176 kJ/molAt 25 °C, this reaction has a ΔG° of 91.1 kJ/mol. What is the ΔS° of this
1. 1 answer
2. 1,856 views
2A + 3B + C ⟶ D + EThe rate constant for this reaction is 0.25, and the reaction is second order in A and is first order in B
1. 3 answers
2. 899 views
H2(g) + I2(g) ⇌ 2HI(g)The concentration of H2, I2 and HI are measured as 0.04 M, 0.08 M and 0.12 M at equilibrium and 200 K.
1. 1 answer
2. 811 views
Ammonia (NH3) ionizes according to the following reaction:NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH–(aq) The base dissociation
1. 1 answer
2. 837 views
Iron fluoride (FeF2) dissociates according to the following equation:FeF2(s) ⇌ Fe^2+(aq) + 2 F^–(aq) A sample of iron
1. 3 answers
2. 1,948 views
CH3COOH(aq) + H2O(l) ⇌ H3O^+(aq) + CH3COO^–(aq)[H3O^+] = 4.0 × 10^–3 M [CH3COOH] = 0.90 M What is the Ka value for the
1. 1 answer
2. 1,886 views
Ammonia (NH3) ionizes according to the following reaction:NH3(aq)^+ H2O(l) ⇌ NH4^+(aq) + OH^–(aq) The base dissociation
1. 1 answer
2. 976 views
NH4Cl(s) → NH3(g) + HCl(g) ΔH°=176 kJ/molAt 25 °C, this reaction has a ΔG° of 91.1 kJ/mol. What is the ΔS° of this
1. 2 answers
2. 655 views
Which of the given conditions leads to a negative free energy value (spontaneous reaction)?1. Highly positive enthalpy and
1. 2 answers
2. 1,288 views
Zinc fluoride (ZnF2) dissociates according to the following equation:ZnF2(s) ⇌ Zn2+(aq) + 2F–(aq) Ksp of this equilibrium is
1. 2 answers
2. 2,538 views
Calcium fluoride (CaF2) is a slightly soluble salt, which dissociates in water according to the following reaction:CaF2(s) ⇌
1. 1 answer
2. 1,482 views
A 0.2 M KOH solution has a volume of 3 L.What percent of water should be evaporated to obtain a 0.6 M KOH solution? The answer I
1. 1 answer
2. 590 views
During a titration experiment, a 150.0 mL solution of 0.05 M sulfuric acid (H2SO4) is neutralized by 300.0 mL solution with an
1. 1 answer
2. 1,743 views
The solubility of sugar is 204 g/ 100 g water at 20 °C.How many grams of water are needed to dissolve 612 grams of sugar at the
1. 3 answers
2. 3,806 views
A 200 mL NaCl solution with a concentration of 4.0 g/L is mixed with a 600 mL solution containing 8% NaCl (m/v).What is the
1. 3 answers
2. 1,627 views
H2SO4(aq) + H2O(l) ⟶ H3O+(aq) + HSO4–(aq) (Stage I)Identify the Brønsted-Lowry acid and base in the reaction.
1. 1 answer
2. 6,179 views
2CO + O2 → 2CO2If 3.4 moles of carbon dioxide (CO2) form at the end of the reaction, how many moles of carbon monoxide (CO)
1. 6 answers
2. 2,900 views
The molarity of a sodium hydroxide solution is 0.2 M. The molar mass of NaOH is 40 g/mol.If 20 g of sodium hydroxide (NaOH) is
1. 2 answers
2. 1,201 views
During a titration experiment, a 150.0 mL solution of 0.05 M sulfuric acid (H2SO4) is neutralized by 300.0 mL solution with an
1. 1 answer
2. 745 views
A 0.2 M KOH solution has a volume of 3 L.What percent of water should be evaporated to obtain a 0.6 M KOH solution?
1. 2 answers
2. 1,346 views
What is the pOH of a 5.0 ×10-5 M hydrochloric acid (HCl) solution at 25° C?
1. 1 answer
2. 1,552 views
A pool is filled with 24.0 liters of a chlorine-water solution with 8.00 ppm of chlorine.How many milligrams of chlorine are in
1. 4 answers
2. 3,040 views
What is the relation between pH and pOH? Is the relation positive, negative or neutral?
1. 2 answers
2. 528 views
A sample of argon at 2.0 atm pressure is heated until its temperature is raised from 60 °C to 90 °C. The pressure of the gas
1. 3 answers
2. 1,431 views
3.2 grams of CH4 gas applies 760 mmHg pressure at 273 K temperature. Assume ideal gas behavior. The ideal gas constant is 62.36
1. 10 answers
2. 1,282 views
Does water have a stronger intermolecular force than liquid ethanol?
1. 3 answers
2. 754 views
Use the heating curve of 50 g of water and the list of values to answer the question.specific heat of ice = 2.10 J/(g·°C)
1. 5 answers
2. 2,571 views
742.5 J of energy is used to heat an unknown mass of aluminum from 10° C to 65.0° C. The specific heat capacity of aluminum =
1. 3 answers
2. 3,104 views
A mixture consists of 3.2 grams of CH4 gas and 1.2 grams of H2 in a steel container. The pressure inside the container is 6.0
1. 2 answers
2. 1,975 views
If the latent heat of fusion for water is 333.4 J/g, how much heat is required to melt 170 grams of ice at 0 °C?
1. 2 answers
2. 1,497 views
Study the balanced equation.3O_2=2O_3 When 4.26 x 1016 mol of oxygen (O) are converted into ozone, how many mol of the pollutant
1. 4 answers
2. 561 views
How many particles are in 9.22 x 10–37 mol of iron(III) oxide (Fe2O3)?5.55 * 10^-13 mol Fe2O3 5.54 * 10^12 mol Fe2O3 1.47 *
1. 1 answer
2. 471 views
Xe+3F_2=XeF_6How many mol of xenon hexafluoride are produced from 4.01 x 102 mol of fluorine (F2)?
1. 1 answer
2. 583 views
Study the balanced equation.3O_2=2O_3 When 4.26 x 10^16 mol of oxygen (O) are converted into ozone, how many mol of the
1. 1 answer
2. 418 views
How many mol of nitrogen monoxide gas (N2) are in a 1.49 L container at standard temperature and pressure?
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2. 502 views
The procedures of an experiment state that 1.3 g of copper (Cu) should be produced. However, the scientist’s experiment
1. 1 answer
2. 588 views
If SiO_2 undergoes a double-displacement reaction with HF, what is the balanced equation?
1. 3 answers
2. 580 views
Oblique tracking. A ship leaves port traveling southwest at a rate of 12 mi/hr. at noon, the ship reaches its closest approach
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2. 1,172 views
Imagine slicing through a sphere with a plane (sheet of paper). the smaller piece produced is called a radius of the sphere. Its
1. 1 answer
2. 1,079 views
Which of the following would not describe Paleo-Indian culture?A.nomadic B.hunted woolly mammoths and mastodons C.invented
1. 12 answers
2. 3,887 views
Vincent went to a pizza restaurant. A vegetable pizza costs $8 and a chicken pizza costs $12. Find an inequality to determine
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2. 639 views
Mr. Feng conducted five math tests. Trinity had completed four tests and scored 79, 78, 82, and 75. She wanted to achieve an
1. 2 answers
2. 823 views
I understand that I have to use newtons laws of motion but I don't really get how to aplly them to this problem. Please help.An
1. 2 answers
2. 631 views
A jug of water is 1/2 full. If 3 children equally share the water, what fraction of the full jug does each child get?A.6 B.1/6
1. 8 answers
2. 1,804 views
Why does the u.s. Constitution limit the power of federal government?
1. 5 answers
2. 697 views
How might citizens engage in civic life to influence politics and government?Please help me with this question
1. 4 answers
2. 790 views
From the story from Joe Magarac, Man of Steel10. Why do the people in the crowd mimic and mock the man from Johnstown in
1. 1 answer
2. 1,112 views
1.Which of the following is an example of a dependent event? (1 point) flipping two coins rolling a number cube and spinning a
1. 8 answers
2. 1,268 views
I need help understanding this problem. Can someone help me????
1. 2 answers
2. 411 views
The walrus and the CarpenderThe sun was shining on the sea Shining with all his might He did his very best to make The Billows
1. 15 answers
2. 2,722 views
1. What were the ideals of movement related to this medallion? @liberty of CongressA. abolition and suffrage B. freedom and
1. 5 answers
2. 1,374 views
1. What were the ideals of movement related to this medallion? @liberty of CongressA. abolition and suffrage B. freedom and
1. 14 answers
2. 2,549 views
Which quadric rule represents the data in the table below?A. y=-2x^2+5 B. y=-x^2+5 C. y=x^2-5 D. y=x^2+5
1. 5 answers
2. 466 views
Describe the speed of the remote-control car over time.A. The speed of the car decreases from 4 mi/h to 2 mi/h in the first 3
1. 62 answers
2. 11,738 views
What is the average caloric burn rate (in calories per hour) for a 180-lb person engaging in high-intensity interval training
1. 0 answers
2. 1,611 views
Which quadric rule represents the data in the table below?A. y=-2x^2+5 B. y=-x^2+5 C. y=x^2-5 D. y=x^2+5
1. 3 answers
2. 480 views