06/17/21

Complete the table by computing f(x) at the given values of x. (Round your answers to three decimal places.)
Complete the table by computing f(x) at the given values of x. (Round your answers to three decimal places.) f(x) = |x − 6| x − 6  (x)= 5.9 5.99 5.999 6.001 6.01 6.1f(x)= ?Use these... more
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06/16/21

Initial/Fixed Value Problems
An automobile company has found that their rate of sales of a new automobile, in millions of dollars, can be modeled by  where t is number of years since the new automobile was introduced. Since... more
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06/16/21

Create an algebraic sinusoidal model relating the rotation angle to blade height above the table.

Rotation Angle () Related Acute Angle () Exact value of sin() Height of Blade above Table... more
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06/16/21

Which best represents the domain and range of the reciprocal of the lienar function y = -3x-9
a) d: {x|x∈R, x ≠ -3} r: {y|y∈R, y ≠ 0}b) d: {x|x∈R, x ≠ 0} r: {y|y∈R, y ≠ 3}c) d: {x|x∈R, x ≠ 3} r: {y|y∈R, y ≠ -3}d) d: {x|x∈R, x ≠ 9} ... more
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06/15/21

Modeling with Trigonometric Functions
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the high temperature of 91 degrees occurs at 5 PM and the average temperature for the day is 75 degrees.... more
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06/14/21

I need help please!
A pot of boiling soup with an internal temperature of 100° Fahrenheit was taken off the stove to cool in a 67°F room. After fifteen minutes, the internal temperature of the soup was 96°F. Use... more
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06/13/21

The electrostatic force between two charges located 2 m apart is 0.10 N what will the force be between these charges when they are located in 1 m apart
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06/13/21

Math Explanation and Solution
In a flooded area, Cora is stranded at a point 70° west of north with respect to the central base of rescue operations. The nearest rescue boat is docked 40° east of north with respect to the... more
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06/13/21

Math Solution and Explanation
At 9am, a certain boat left a port in the direction of 50° east of north and maintains a speed of 90kph. At that same time, another boat left the same port in the direction of 30° east of south.... more
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06/12/21

No one has helped me. Please help quickly!
3 Cu + 8HNO3 --> 3 Cu(NO3)2   + 2 NO + 4 H2OIn the above equation how many grams of water can be made when 6 grams of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a... more
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06/09/21

Chemistry question

Al + FeO ⇒ Al2O3 + FeStep one: balance equation:Please answer the following in number only; example, 4What is the coefficient for Al? What is the coefficient for FeO?                What is the... more
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06/08/21

A plane in still air.
You are flying a plane from Toronto to Ottawa (N65E). The wind is coming from N20W at 60 km/h. What should your speed relative to the still air and heading be if you are to make the 500km trip in... more
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06/08/21

Stoichiometric Calculations
1 C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(g) based on this balanced equation, how many moles of water would be produced when 10 moles of oxygen gas (O₂) react with excess propane (C₃H₈)?
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05/31/21

determining limiting reactants etc
One method for manufacturing sodium sulfate proceeds according to the following equation:4NaCl + 2SO2+ 2H2O + O2  2Na2SO4 + 4HClAddress the following questions about this reaction (4 each)a. If... more
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05/31/21

Which reactant will be left over if 5.00 g H2 is mixed with 10.00 g O2?
If 5.00 g of hydrogen reacts completely 44.1 g of water is produced. If 10.00 g of oxygen reacts completely 11.3 g of water is produced.
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05/31/21

8 Fe (s) + S8 (s) --> 8 FeS (s)
If 3.00 g of iron reacts completely 4.72 g of FeS is produced.If 7.50 g of sulfur reacts completely 20.56 g of FeS is produced. Which reactant will be left over if 3.00 g of iron reacts with 7.50 g... more
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05/31/21

How many moles of water are produced when 240 grams of CuO react? Molar mass of CuO = 79.55 g
1.0 mol54 mol18 mol3.0 mol
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05/31/21

How many moles of HCl would have to be present to produce 75.82 g of MgCl2? Molar mass of MgCl2 = 95.21g
Mg(OH)2 (s) + 2 HCl (aq) --> 2 H2O (l) + MgCl2 (aq)
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05/31/21

Mole Conversions

6. How many atoms are there in 1.68 x 10-9 moles of lithium?7. How many molecules are there in 4.55 g of nitrogen gas (N2)?8. How many molecules are there in 0.663 moles of water?9. How many grams... more
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05/30/21

Stoichiometry Problem
9.How many grams of oxygen did I use in my experiment to produce 50.0g of water?                                    CH4       +     O2           CO2           +     H2O   10.How many moles of water... more
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05/30/21

Stoichiometry Problem
7.  How many moles of sodium acetate are produced if 3.58g of sodium phosphate are reacted with excess silver acetate?                                         AgC2H3O2   +  Na3PO4      Ag3PO4    + ... more
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05/30/21

Stoichiometry Problem
1.How many moles of KCl are produced in the decomposition of 5.00g of potassium chlorate?                                                                 KClO3          KCl       +    O22.If excess... more
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05/30/21

Stoichiometry Problem
How many moles of hydrogen molecules could be produced by the reaction of 50 moles of sodium atoms with water?                                                    Na   +      H2O         NaOH     ... more
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05/30/21

Stoichiometry Problem
  If 0.380 mol of sodium  phosphate is allowed to react with an excess of  sulfuric  acid, how many moles of phosphoric acid  could  be  formed?                                      Na3PO4     +   ... more
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05/30/21

Limiting Reactant Problem
What is the limiting reactant, what is the excess reactant and by how much and what is the maximum amount of Aluminum Phosphate produced if 25.0 g of Aluminum reacts with 100.0 grams of... more
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