# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 562
1. ## prealgebra

a local pool charges a \$6 sign up fee plus \$2 per visit as as summer special. Another pool runs a summer special that only charges \$3 per visit. Write a system of equations to represent this situation. Is it 6+ 2x=y 3x=y

asked by mike on February 23, 2016
2. ## Physics

A 2.90 kg mud ball has a perfectly inelastic collision with a second mud ball that is initially at rest. The composite system moves with a speed equal to one-third the original speed of the 2.90 mud ball. What is the mass of the second mud ball?

asked by Luke on December 8, 2011
3. ## Math

I'm having a hard time with graphing this problem. Could someone please help? Graphing has never been one of my strongest points. Graph the system of inequalities. x+3y is less than or equal to 9, 3x+y is less than or equal to 9, x is greater than or equal

asked by B.B. on April 9, 2010
4. ## physics

A particle carrying a charge of 6.0uC is located at the origin of a rectangle coordinate system, and a particle carrying a charge of 4.0uC is located at (0,5.0m). What are the magnitude and direction of the electric field at the positions (5.0m,0),

asked by Dylan on February 5, 2015
5. ## Physics

The load-bearing piston in a certain hydraulic system has an area 35 times as large as the input piston. If the larger piston supports a load of 9000 N, how large a force must be applied to the input piston?

asked by Jordan on March 30, 2013
6. ## Chemistry 101 college

How many grams of chloride ions are in a 2.5L of a 1.0 M calcium chloride solution?

asked by Katie on July 19, 2011
7. ## algebra

o How do you know when an equation has an infinite number of solutions? o How do you know when an equation has no solution?

asked by lilmissluck on January 7, 2011
8. ## Chemistry

What is the Molarity of sodium ions in a 3.3 M solution of sodium phosphate?

asked by Ainsley on May 21, 2018
9. ## chemistry

how would you prepare 1.00 L of 0.50 M solution of NiCl2 from the salt nicl2·6H2O? thanks :)

asked by kelly on August 24, 2010
10. ## Chemistry

What is the Molarity of sodium ions in a 3.3 M solution of sodium phosphate?

asked by Ainsley on May 21, 2018
11. ## chemistry

How many liters of a 5% (m/v) glucose solution would it take to obtain 32g of glucose?

asked by Trish on April 22, 2010
12. ## Math

Find the ratio of the complementary angles having the ratio of 3:16. With solution please, thank you!

asked by Jillian on November 19, 2017
13. ## Chem

How would you prepare 150ml of .5M NaOH starting with a 6M solution of NaOH

asked by Gonzalo on November 25, 2012
14. ## English

asked by Briana on April 7, 2010
15. ## chemistry

what is molarity of h2so4 solution contaning 9.8g of h2so4 per 500ml?

asked by ahtasham on September 8, 2015
16. ## CHEMISTRY

if the [H] of a solution at 25degrees is 1.7*10^-4 mol/L, calculate the [OH] in mol/L, the PH, and the pOH?

asked by nicole on May 5, 2012
17. ## Chemistry 2

The pH of a 0.175 M aqueous solution of a weak acid is 3.52. What is Ka for this acid ?

asked by Sammie on September 22, 2010
18. ## ap chem

The pH of a 0.100 M solution of a weak acid HA is 4.94 . Calculate Ka for the acid.

asked by Anonymous on February 14, 2011
19. ## Chemistry

The Ka of hydrazoic acid (HN3) is 1.9 × 10-5 at 25°C. What is the pH of a 0.35-M aqueous solution of HN3?

asked by Ericka on December 10, 2009
20. ## Math

Finished an equation and got an answer of 8 = -6 Is this no solution for the final answer?

asked by Ana on November 10, 2017
21. ## chemistry

How would you prepare 1.00 L of an alchol water solution that is 5.00 vol % alchol.

asked by John on November 21, 2011
22. ## Chemistry

A .35M solution of a newly synthesized acid, HX, has [H+] of 4.1 x 10^-2. What is the value of Ka for this acid?

asked by Diana on January 8, 2011
23. ## chemistry

How would you prepare 1 L of a 1.15 M aqueous solution of MgCl2? What grams of MgCl2 would be used?

asked by Anonymous on June 15, 2011
24. ## science

What property must a substance have if you want to use the substance to make aqueous solution

asked by phil on March 21, 2017
25. ## chemistry

how much calcium is there in 2.30 L of 0.0450 M calcium hydroxide solution ? pdf

asked by ashishs on February 6, 2012
26. ## Chemistry

How many moles of CaCl2 are in 32cm cube of 0.2M solution of CaCl2?

asked by desperate on October 4, 2012
27. ## General chemistry

What is the m/m% of NaOH in a solution prepared with 40.0 g NaOH and 400.0 g of water

asked by Chin on January 23, 2017
28. ## Chemistry

what is the concentration of hcl when 55 ml of this hcl solution neutralize 15ml of .9m ca(oh)2

asked by Faith on February 10, 2012
29. ## MATH ! plzz help

Write an equation that has (2,6) as a solution. Explain how you found the equation.

asked by Maryam :) on October 28, 2012
30. ## Chemistry

How many moles of MgCl2 are present in 5 liters of a 0.12 M MgCl2 solution?

asked by Anonymous on May 31, 2012
31. ## Chemistry

To make some solution 500mL H2SO4 0.3 M. How many grams of H2SO4 are used?

asked by Natya on July 31, 2012
32. ## Chemistry

What property must a substance have if u want to use the substance to make an aqueous solution? Thank you

asked by Seastone on October 21, 2012
33. ## chemistry

How many grams (of mass m) of glucose are in 355mL of a 5.50% (m/v) glucose solution?

asked by chelsea on November 4, 2013
34. ## Chemistry

How many grams of K2SO4 would you need to prepare 1500 g of 5.0% K2SO4 (m/m) solution?

asked by Jack on April 26, 2010
35. ## Chemistry

The solubility of Agcl with solubility product 1.6 × 10^-10 in 0.1 M Nacl solution will be ?

asked by Ananthi on April 30, 2017
36. ## scince,chemistry

How grams of NACL are present in a 250-g solution containing 9% NACL?

asked by sharlyn baquita on June 24, 2012
37. ## Algebra

What is a solution for-the inequality y>1.9? -9 -2 2 1.9 My answer is if it has to be greater then 1.9 the answer must be 2.0 from those 4 choices.

asked by Tricia on October 4, 2014
38. ## chemistry

how would you prepare 60.0 mL of 0.200 M HNO3 from a stock solution of 4.00 M HNO3?

asked by Michael on September 29, 2010
39. ## chemistry

how many moles of sucrose C12H22O11 does 300mL of a 0.10 M sucrose solution contain?

asked by amber on April 28, 2011
40. ## Chemistry

What volume of 6.0m H2SO4 is needed to prepare 0.5L of a 0.3M H2SO4 solution?

asked by Janeth on May 29, 2012
41. ## Chemistry

How will you prepare 10mL of .050 M HCl from a .10 M solution of HCl?

asked by Danielle on February 22, 2010
42. ## algebra

y=3x+4; -1, 1 2, 10 3, 12 7, 1 find the solution set for each equation , given the replacement set

asked by jordan on November 2, 2009
43. ## chem

How many moles of glucose (C6H12O6) are in 1.6 liters of a 0.75 M C6H12O6 solution?

asked by bryan on January 17, 2012
44. ## chemistry

The pH of a 0.175 M aqueous solution of a weak acid is 3.52. What is Ka for this acid ?

asked by Anonymous on September 24, 2010
45. ## Trigonometry

If possible find a solution to 2 cos(theta)=-0612. theta=

asked by Bob on April 9, 2017
46. ## Chemistry

Describe how 500ml of 0.1M solution of NaOH can be prepared from 2.0M NaOH?

asked by Snagga on March 28, 2012
47. ## Chemistry

how many grams of NaOH do you need to prepare a 3.00 x 10^2 mL stock solution of 2.00 M NaOH

asked by Alexander on October 7, 2015
48. ## chemistry

calculate the molarity of 30.0g of NaOH in 350. mL of NaOH solution

asked by Anonymous on April 14, 2010
49. ## chemistry

what mass of a 15% (m/m) NaOH solution contains 125 grams NaOH?

asked by Anonymous on August 19, 2010
50. ## chemistry

How many grams of NaOH (MW = 40.0) are there in 100.0 mL of a 0.275 M NaOH solution?

asked by mary on November 7, 2011
51. ## Math

Hi, could you please provide a step by step solution explaining how to do this: [(a^2 - b^2 + a + b)/(a - a^3)] x [(1-a^2)/(a - b + 1)] The answer should be (a + b)/ a Thanks

asked by Luna on February 4, 2014
52. ## Chemistry

If the pH of a 0.46 M aqueous solution of a weak base is 9.2, estimate the Kb of the base:

asked by Damon on August 1, 2016
53. ## Math Mixture Word Problem

How much water must be added to 1 liter of a 5% saline to get a 2% saline solution

asked by Anonymous on February 9, 2014
54. ## Chemistry

How many grams of NaCl are present in 1.5L of a 0.25M NaCl solution?

asked by Telimm on July 1, 2015
55. ## chemistry

Calculate the pH of a 1.33 mol/L solution of HCN is the Ka value of HCN is 6.2x10^-12

asked by Joseph on April 9, 2008
56. ## Chemistry

How do I calculate this? How many grams of CaCl2 is in 500 mL 0.1 M solution of CaCl2

asked by Kate on June 25, 2013
57. ## Science (Chem)

Calculate the volume (in mL) of a 0.150 M KCl(aq) solution that contains 10.00 g KCl

asked by Kevin on April 18, 2018
58. ## algebra

how do i find the solution set of the equation if the replacement set is A={2,6,7,12,15}33-b=18

asked by Josolin on January 10, 2010
59. ## science

what property must a substance have if you want to use the substance to make an aqueous solution

asked by Anonymous on November 6, 2012
60. ## math

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?

asked by Jessica on September 18, 2010
61. ## chem

If the pH of a solution is 9, what are the hydrogen ion and hydroxide ion concentrations?

asked by maree on February 1, 2012
62. ## Chemistry

How many moles of HCl are present in a 50mL 3M solution of HCl?

asked by Jess on January 12, 2011
63. ## Math

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?

asked by Jessica on September 18, 2010
64. ## Chemistry

A 0.10 M solution of a weak acid has a pH of 3.5 at 25%C. What is the equilibrium constant, Ka, for this acid?

asked by Tara on October 10, 2010
65. ## Chemistry

What is the concentration of nitrate ions in a solution that contains M aluminum nitrate?

asked by Mm on March 8, 2011
66. ## Science

How many mL of 80% v/v ethanol do you need to make 200 mL of a 50% ethanol solution in water?

asked by John on September 11, 2012
67. ## chemistry

How many grams of sucrose are in 1.5kg of a 10.5% (by mass) solution of sucrose?

asked by vicki on July 15, 2015
68. ## Math

Verify that y=e^abs(x) is a solution to y'-y={-2e^-x, x= 0 on each of the intervals (-infinity,0) and (o, infinity).

asked by John on September 18, 2012
69. ## Math

Verify that y=e^abs(x) is a solution to y'-y={-2e^-x, x= 0 on each of the intervals (-infinity,0) and (0, infinity).

asked by John on September 18, 2012
70. ## chemistry

how many gram of NaNO3 are in 25cm3 of 0.01m NaNO3 solution?

asked by peter on June 11, 2012
71. ## Chemstry

How many moles of NaCL are contained in .2570 L of a 37.5 mM Solution of NaCl?

asked by Jann on May 1, 2011
72. ## Chemistry

The boiling point of an aq solution 102.11 C. What is the freezing point?

asked by Josh on July 12, 2011
73. ## SCIENCE

Calculate the mass % of nacl in a solution containing 1.5g of nacl in 50.0g of water

asked by YIRA on November 22, 2016
74. ## Chemistry

The pH of a 0.0642 M solution of a monoprotic acid is 3.86. Is this a strong acid?

asked by kalyanmith on March 10, 2011
75. ## chemistry

how many grams of NaOH do you need to prepare a 3.00 x 10^2 mL stock solution of 2.00 M NaOH

asked by jane on October 7, 2010
76. ## Chemistry

How many moles of HCl are present in a 50mL 3M solution of HCl?

asked by Jess on January 12, 2011
77. ## Algebra

determine whether the given numbers are solutions of the inequality. 6,-14,-18,-2 Y-8>2y-3 solutions are -14 -18 -2 not solution 6 Is this right?

asked by Renee on May 1, 2011
78. ## chemistry

What volume of 0.210 ethanol solution contains .44 mol ethanol?

asked by Anonymous on April 1, 2010
79. ## Chemistry

What happens when hydrogen sulfide is heated through an iron sulfide solution?

asked by Emem Thompson on November 28, 2011
80. ## CEMISTRY

Consider a weak acid HX. If a 0.10 M solution of HX has a pH of 5.87 at 25°C, what is ΔG° for the acid's dissociation reaction at 25°C?

asked by Sarah on May 1, 2012
81. ## Cost accounting

Cost terminology and cost behaviors and exercises solution

asked by Danny on September 18, 2009
82. ## chemistry

Determine the pH of a solution containing 1.00 mol/L of HCN (Ka = 5.00×10–10) and 5.00×10–2 mol/L of HCl.

asked by Anonymous on July 5, 2016
83. ## chem

What volume of 17% NaCl solution will provide 27 grams of NaCl?

asked by ashley on August 29, 2010
84. ## chemistry

How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?

asked by Stacy on October 13, 2010
85. ## chemestry

1. Determine the pH of a solution containing 1.00 mol/L of HCN (Ka = 5.00×10–10) and 5.00×10–2 mol/L of HCl.

asked by Anonymous on June 19, 2016
86. ## Chemistry

How would you prepare 1.00 L of a 0.5 M solution of NiCl2 from the salt NiCl2 x 6H2O

asked by Kenz on February 5, 2012
87. ## Organic Chemistry

The pKa of CH3COOH is 4.76. What statement describes a solution of CH3COOH at pH of 6.4?

asked by Anonymous on August 28, 2016
88. ## CHEM 1LB

how many grams of KIO3 are needed to make 50.0 mL of a 1.2 M KIO3 solution

asked by Anonymous on January 17, 2010
89. ## chemistry

If 20 mL of 0.10 M NaOH are added to 30 mL of 0.20 M HOAc, what is the pH of the resulting solution? (Ka = 1.8 ´ 10-5 for HOAc.)

asked by david on June 18, 2010
90. ## Chemistry

How many moles of NaOH are in 125mL of a 4.00M solution of NaOH?

asked by Anonymous on November 3, 2012
91. ## Chemistry

To produce 3.00 L of a 1.9 M solution of NaOH, how many grams of NaOH must be dissolved?

asked by Jessica on April 11, 2012
92. ## Chemistry

Can someone please explain to me whats the difference between a buffered and non-buffered solution?

asked by Raj on March 23, 2008
93. ## chemistry

solution of 0.1molar NH4OH and 0.1 NH4CL ph=9.25 calculate kb for NH4OH?

asked by ankit on September 11, 2014
94. ## chemistry

find the ph of the resulting solution 10 ml of 0.06 mol/l is mixed with 20 ml of 0.02 mol.l Ca(OH)2

asked by nina on June 27, 2013
95. ## medicine

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?

asked by Jessica on September 18, 2010
96. ## bio-technolgy

how much MgCl2 would you use to make 200mL of a 100mM solution of MgCl2

asked by denise on October 11, 2011
97. ## Atomic structure

How many molecules of glycerol(C6H8O3) would be present in 1L of a 1M glycerol solution? a. 1 b. 14 c. 92 d. 1*10^7 6.02*10^23

asked by Jeannie on September 21, 2009
98. ## chemistry

What volume of a 4.50% v/v solution of ethanol in water can be prepared with 23.9 mL of ethanol

asked by Anonymous on February 23, 2012
99. ## math

ell whether each equation has one solution, zero solutions or infinite solutions 5(x-3)+6=4x+3

asked by bill on March 8, 2017
100. ## Chemistry 101

How many milliliters of a 0.14 M NaOH solution contain 0.158 mol of NaOH?

asked by Sky on February 3, 2011