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Express the equation in terms of x which finds out how much water must be added to x liters of the 18% acid solution to decrease concentration to 15%?
The car travels for the total of 10 hours. Car averages 60 miles per hour for x hours and averages 70 miles per hour for rest of time. Write total distance traveled by car in terms of x.
If every exam is worth 20% of overall score, and final exam is worth 40% of overall score, write the expression for student's overall score if student gets the score of x on final exam.
If both copiers are utilized, they can complete activity in 72 minutes. How long it takes every machine to finish task when working alone?
Ship A leaves the port sailing east at 15 miles per hour. Two hours later, ship B leaves port sailing south at 20 miles per hour. Write distance D between ships in terms of t , where t is number of
Equation of a line which goes through point ( 6 ,6 ) and is perpendicular to line 2 x + 3 y = 3 can be written in form y = mx+b
If possible express the following equation in the slope-intercept form. 7 x - 19 y + 4 = 0. Compute value of m when written in slope-intercept form? If equation can't be written in slope-intercept for
Determine slope of through (-4, 5) and (-2,-8)? If slope is undefined, write undefined. Determine slope of line through (2, 9) and (2,10)? If slope is undefined, write undefined.
A flask contains 49.8 mL of 0.150 M calcium hydroxide. Determine the number of millimeters of 0.350 M sodium carbonate is needed to react totally with the calcium hydroxide?
Find selling price PV, per $1,000 maturity value, of bond. Meg's pension plan is the annuity with the guaranteed return of 6% per year (compounded quarterly).
A chemist wants to arrange 0.25 M HCl. Commercial HCl is 12.4 M. Determine the number of millimeters of the commercial acid does the chemist need to make up 1.50 L of the dilute acid?
Determine the minimum voltage needed for the electrolysis of 1.0M NaCl in neutral solution. 2H2O + Cl- (1.0M)---> H2(1atm) + Cl2(1atm) +2OH- (1 x 10-7M)
Reflect on an electrochemical cell which is constructed from the following half cells, linked by a KCl salt bridge and by an external circuit.
In the composite ion [ML6]n+, Mn+ has seven d electrons and L is a strong field legend. Here the magnetic properties of the composite ion correspond that determine the number of unpaired electrons
Determine the de Broglie wavelength of a baseball of mass 0.17kg which is thrown with a velocity of 30 m/s.(me(mass of electron)= 9.1093819E-11)
The helicopter hovers 1830 feet above the island. Angle of depression from helicopter to the point on coast is 38 degrees. Determine distance of island from coast in feet?
The freezing point of t-butanol is 25.50°C and Kf is 9.1°C·kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 30.0 g sample of&nb
Describe the composition of a methanol (CH3OH)-propanol (CH3CH2CH2OH) solution which is having a vapor pressure of 188 torr at 40°C? At 40°C, here the vapor pressures of pure methanol is 303
A bottle of wine having the 14.5% ethanol by volume and where the density of ethanol (C2H5OH) is 0.789 g/cm3. Determine the concentration of ethanol I in wine in terms of mass molality and percent.
Suppose sequence is arithmetic. Determine function a(n) which explains sequence and determine 19th term of sequence
Determine present value PV of annuity necessary to fund withdrawal given. (Suppose end-of-period withdrawals and compounding at same intervals as withdrawals.)
Ir; the new world of international relations, Assignment 1: The Cold War and U.S. Diplomacy Due Week 5 and worth 135 points Select a president from the table, “Presidents and Their ‘Doctrin
The 3.33 gram sample of iron ore is distorted to a solution of iron (II) sulfate and this solution is titrated with the 0.150 M potassium dichromate.
At the developing process of film of black and white film, the silver bromide is removed from the photographic film by the help of fixer. The major component of the fixer is sodium thiosulfate.
The magnesium is used in the airplane bodies and the other type of lightweight alloys. Thus the metal is obtained from the seawater in a procedure that involves the neutralization, precipitation, el