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Dexter

Questions and answers by Dexter

Questions (50)

Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe how you would
1. 6 answers
2. 3,483 views
I need to know 3 reasons why my Ecological Footprint is smaller than the world average Footprint (3.4 vs. 2.2) I am unsure as to
1. 4 answers
2. 602 views
How many molecules of carbon dioxide (CO2) are there in 88g of carbon dioxide?a. 1 b. 2 c. 88 d. 1.2 x 10 24 e. not enough info
1. 4 answers
2. 1,835 views
Dimethylsulfoxide (C2H6SO), also known as DMSO. How many moles of carbon are in 4 moles of DMSO?a 1 b 2 c 4 d 8 e not enough
1. 2 answers
2. 648 views
1) Why is it appropriate to call the endomembrane system a "system?"2) The selective permeability of biological membranes is
1. 0 answers
2. 440 views
Barbara knows that she will need to buy a new car in 4 years. The car will cost $15,000 by then. How much should she invest now
1. 5 answers
2. 2,302 views
Please read to the bottom - This help was wonderful and absolutely correct, I'm asking a bit more regarding the same question,
1. 4 answers
2. 1,087 views
Please read to the bottom - This help was wonderful and absolutely correct, I'm asking a bit more regarding the same question,
1. 2 answers
2. 722 views
Not clear about this, please help me understand the steps:(5b^2c^1/4)^3
1. 2 answers
2. 495 views
Hi - please help me with this one:(5b^2c^1/4)^3 is the answer: 125b^6 3c ^ 3/4
1. 3 answers
2. 348 views
pls. verify:4x^3y^-2 / 2x^-1y^4 = 2x^4y^-6 [w^1 / w^-3]^-4 = 1/w^16
1. 1 answer
2. 297 views
Hi there - I'm going to post the question as written in my book.Three 20.0 mL samples of nitric acid are titrated with a 0.200
1. 4 answers
2. 947 views
Please help me verify the following question:Consider the following ion; XF2-2 What is the oxidation number assigned to element
1. 4 answers
2. 750 views
Following question I need help with part b) Please verify my answer for part a) too if possible.Consider the following reaction
1. 3 answers
2. 1,162 views
Hi I have a sample question for a math assessment that I wanted to ask about:What number is expressed by (9 x 6) -s- 3? a 18 b
1. 6 answers
2. 493 views
please verify my answer:Consider the following REDOX reaction: Zn(s) + Pb+2(aq) &#56256;&#56518; Zn+2(aq) + Pb(s) a. Write the
1. 3 answers
2. 3,000 views
Please help me verify:The following reactions are involved in the formation of acid rain. Use oxidation numbers to identify
1. 5 answers
2. 1,738 views
Please help verify my answer. Not confident it is right:please verify my answer: Consider the following REDOX reaction: Zn(s) +
1. 2 answers
2. 556 views
Please help verify my answer. Not confident it is right:please verify my answer: Consider the following REDOX reaction: Zn(s) +
1. 3 answers
2. 548 views
What is the gram formula mass of NaC2H3O2 multiplied by 10H2O
1. 2 answers
2. 535 views
The length of the flag needs to be 1.9 times the height. If the flags height is 3 feet, then what is the area of the flag?
1. 2 answers
2. 589 views
when 2g of NaOH were dissolved in 149 g of H2o in a calorimeter at 24 degrees C the temperature of the solution went up to 29
1. 4 answers
2. 534 views
I've been working at this for some time and have been unsuccessful. I know i'm supposed to use the principle interest formula
1. 1 answer
2. 415 views
If a farmer divides his land into square fields that are 1/2 mile long and 1/2 Mike wide how many fields will he have
1. 6 answers
2. 691 views
If a farmer has one square mile of land and he divides his land into square fields that are 1/3 mile long and 1/3 mile wide,how
1. 6 answers
2. 2,459 views
does eastern canada primarily speak french
1. 1 answer
2. 365 views
The sum of the digits of a three-digit number is 11. If the order of the digits is reversed, the number is decreased by 396. The
1. 3 answers
2. 566 views
What is number 9 to the week 11 crossword puzzle Tennessee
1. 1 answer
2. 303 views
A science class goes to an amusement park to investigate potential and kinetic energy. Which action best demonstrates potential
1. 4 answers
2. 50 views
Leanna is investigating heat transfer using a metal nail and foam cup filled with hot water. First, she records the temperature
1. 4 answers
2. 58 views
The diagram below shows two flasks of water, one with hot water and the other with room temperature water, which are connected
1. 4 answers
2. 57 views
What determines an object's kinetic energy?ResponsesMass and positionMass and positionMass and speedMass and speedWeight and
1. 4 answers
2. 21 views
What is the main type of energy conversion taking place? Captionless ImageResponsesMechanical energy is converted to thermal
1. 4 answers
2. 111 views
The diagram shows a simple pendulum. Neglecting friction, what happens to the total mechanical energy as the pendulum swings
1. 4 answers
2. 46 views
Tony built a ramp to determine the average distance his toy car will travel when released down the ramp. Which experiment will
1. 4 answers
2. 74 views
How does an ice cube cause hot coffee to become cool?ResponsesHeat from the hot coffee is transferred to the ice cube through
1. 4 answers
2. 49 views
Which of the following is true as the cars of a rollercoaster race down a hill?ResponsesKinetic energy is stored in the cars as
1. 4 answers
2. 43 views
A feather and a bowling ball are each dropped from an equal height in a vacuum and land at the same time. Which graph shows the
1. 1 answer
2. 52 views
The picture below shows a cart as it rolls down a hill. This picture is an example of which scientific law?Captionless
1. 6 answers
2. 57 views
Kyra and Violet are camping with their family. They are roasting marshmallows over a campfire. What types of energy are released
1. 1 answer
2. 50 views
Sonya is investigating kinetic energy using a bowling ball with a mass of 3 kilograms. She records her observations in the
1. 1 answer
2. 35 views
A student with a body temperature of 37°C holds a can of cold soda with a temperature of 18°C. The student is in a room with
1. 1 answer
2. 48 views
When energy is conserved or transferred, some energy becomes unavailable to do useful work. What happened to the unavailable
1. 1 answer
2. 40 views
The picture below shows a model of a water geyser like those in Yellowstone National Park, which erupt with giant plumes of hot
1. 1 answer
2. 47 views
Write a paragraph in which you explain how including a conflicting point of view and evidence in an argument can make it more
1. 2 answers
2. 82 views
Which phrase defines a sound argument?(1 point)Responsesan impractical analysis that is hard to provean impractical analysis
1. 1 answer
2. 52 views
Which statement describes a sound reason used to support a claim?(1 point)ResponsesSound reasons are full of emotion.Sound
1. 1 answer
2. 57 views
Which step should people take first after viewing a commercial for a product?(1 point)Responsesmake a decision based on whether
1. 1 answer
2. 49 views
Besides a speaker's reasoning, which factor might affect a person's impression of the arguments in a radio speech?(1
1. 1 answer
2. 47 views
Which statement is a sound reason to support a leash law for dogs?(1 point)ResponsesSome leashes are pretty and can display an
1. 1 answer
2. 49 views

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