10/06/20

Write the equation of the line with a slope of 8 and a y-intercept of -3 in slope-intercept form.
Write the equation of the line with a slope of 8 and y-intercept of -3 in slope intercept form
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10/06/20

How do I write/fill this questions?
Q1. Write the balanced equation for the decomposition of KClO3 in the presence of a catalyst. The products of the reaction are KCl and O2.  The answer is 2KClO3 ----> 2KCl + 3O2 ?Q2. What is the... more
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10/06/20

Translating Word Problem
The sum of two numbers is 84. The first is nine more than four times the second. Find the first number.
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10/06/20

What can the chemist report for the specific heat capacity of the substance?
A chemist carefully measures the amount of heat needed to raise the temperature of a 442.0mgsample of a pure substance from 52.4°C to 66.4°C. The experiment shows that 25.9J of heat are needed.What... more
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10/06/20

Write an equation that represents the maximum and minimum chlorine concentration
Chlorine is added to a swimming pool to sanitize the water and make it safe for swimming. The chlorine should be in the range 2-4ppm (parts per million). Write an equation that represents the... more
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10/05/20

An object with zero acceleration is not changing its velocity. True or False?
True or false?An object with zero acceleration is not changing its velocity.
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10/05/20

Determine the net change and average rate of change between the values of the variable
A function is given.h(t) = t2 + 4t;     t = −1, t = 4(a) Determine the net change between the given values of the variable.(b) Determine the average rate of change between the given values of the... more
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10/04/20

The table above summarizes data given to a student to evaluate the type of change that took place when substance X was mixed with water.

Substance appearance, boiling point, Density Water Clear, colorless liquid 100.0°C 1.00g/mL X White, crystalline solid 1935.5°C 2.15g/mL Mixture of water +X Clear, colorless... more
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10/04/20

Chem plz help!!!
Substance appearance, boiling point, Density Water Clear, colorless liquid 100.0°C 1.00g/mL X White, crystalline solid 1935.5°C 2.15g/mL Mixture of water +X Clear, colorless... more
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10/04/20

The specific heat of a certain type of metal is 0.128 J/(g⋅∘C). What is the final temperature if 305 J of heat is added to 79.4 g of this metal, initially at 20.0 ∘C?
please help!! I am having a lot of trouble with this question
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10/04/20

finding height of the ball
Jose threw a football to his friend Carmen. The height, h (in feet), of the ball above the ground at any given time, t, is given by the function h(t)=−16t2+40t+6.How long will it take for Carmen to... more
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10/04/20

What is the vertex form of the equation that represents the height of the water balloon, h, after t seconds?
Justin launches a water balloon vertically from a platform on his roof. The height of the balloon (in feet) is represented by the equation h=-16t^2+32t+48  where  is the time (in seconds) after he... more
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10/04/20

According to the following reaction, how many grams of oxygen gas are necessary to form 0.289 moles carbon dioxide?
propane (C3H8) (g) + oxygen (g) carbon dioxide (g) + water (g)
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10/03/20

Exponential Modelling Question
Radium has a half-life of 1620 years. Suppose 3 g of radium is present initially. Complete the table. (Round ALL decimal answers to the nearest hundredth  EXCEPT  your answer for b which will need... more
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10/02/20

Miquel pays $55 semimonthly for health insurance which is 16% of the total cost. His employer pays the rest. What is the total yearly cost to the nearest dollar of Miquel’s health insurance?

Miquel pays $55 semimonthly for health insurance which is 16% of the total cost. His employer pays the rest. What is the total yearly cost to the nearest dollar of Miquel’s health insurance? 
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10/02/20

How do I solve this question

A balloon originally has 0.10 moles of helium and has a volume of 0.50 L. Is 0.63 g of helium or added to the balloon, what will the new volume be, in liters? Assume the temperature and pressure do... more
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10/02/20

I need help with this

In a 4.00 L pressure cooker, water is brought to a boil. If the final temperature is 115 Celsius at 4.70 ATM, how many moles of steam are there in the cooker
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10/01/20

What is the amount of heat in kJ associated
According to the following thermochemical equation, what is the amount of heat in kJ associated if using 4.1 g of HF? Assume excess SiO2. (molar mass of HF: 20.01g/mol). Report your answer to the... more
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10/01/20

Four times the difference of a number and nine is -30
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10/01/20

which specific heat capacity provided would require most energy to increase temp by 1 degree c
A-1.0 O2(g)(cs=0.198 j/g degree C)B-1.0 CO2(g)(cs=0.853 J/g degree C)C-1.0g Si(s)(0.712 j/g degree C)D-1.0Fe(s)(cs=0.449 j/g degree C)E-1.0gAr(g)(Cs=0.522 j/g degree C)
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10/01/20

Data represents square footage and rent... PLEASE HELP
Table represents square footage and rent (per month) sq footage x: 684, 760, 822, 796, 806, 899, 790rent per month r: 1695, 1765, 1805, 1785, 1780, 1895, 1755A) what sentence best describes the... more
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10/01/20

Please help!!!!
The price P (in dollars) and the quantity X sold of a certain product obey the demand equation x = -8p+ 160 0 < p <= 20A) express the revenue R as a function of PB) what is the revenue of... more
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10/01/20

How would you solve these problems?
Level 1Q1A train travels north at 103 km/h. This is an example of: Velocity  Speed Acceleration  Speed and Acceleration  Q3If John walks 11.5 meters east in 7.1 seconds, what is John’s... more
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10/01/20

lennys average score after 3 tests is 88.What score on the 4th test would bring lennys average up to exactly 90?
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10/01/20

Question Below:
Who will win the third round of Tug-Of-War?Round 1: On one side are 4 acrobats, each of equal strength. On the other side are five neighborhood grandmas, each of equal strength. The result is dead... more
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