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Questions (9)
Use the paragraph below to answer the questions.
An online collection has raised more than $145,000 for a man who stumbled onto a
1 answer
126 views
Neil has a bucket of beads. He uses them to make 8 identical necklaces and then buys 25 beads at the store. He ends up with a
1 answer
113 views
Neil has a bucket of beads. He uses them to make 8 identical necklaces and then buys 25 beads at the store. He ends up with a
1 answer
147 views
Which of the following answers applies the Distributive Property of Multiplication Over Addition correctly for simplifying
9 answers
299 views
Use the properties of operations to add 4(g−2)+(g+2)
4 ( − 2 ) + ( + 2 ) .(1 point)
7 answers
418 views
Use the properties of operations to add 9(k+1/3)+10(1/2k−1)
1 answer
148 views
Use the properties of operations to add 9(k+1/3)+10(1/2k−1)
9 (
1 answer
151 views
b. How would you expect the density of water to compare to the density of hydrogen peroxide?(1 point)
Responses The density of
1 answer
242 views
Aria and Marcus know that when sugar burns, it undergoes this reaction. However, they are not sure how much water is produced.
17 answers
216 views
Answers (15)
Factor 48y+36z using the GCF
−15+4/5(15e−10)−10e
Simplify 2(3v+9)−14−6(−5v−4).(1 point)
Simplify −4(7b+3)+24b−8 .(1 point)
Subtract: 2(k−4)−3(2k−1) 2 ( − 4 ) − 3 ( 2 − 1 ) .(1 point
Use the properties of operations to subtract (p−3)−(2.4+2p) .(1 point)
Use the properties of operations to subtract (h+k)−(2k−h) ( ℎ + ) − ( 2 − ℎ ) .(1 point)
b. How would you expect the density of water to compare to the density of hydrogen peroxide?(1 point) Responses The density of water would be the same as the density of hydrogen peroxide. The density of water would be the same as the density of hydrogen
The boiling point of water is 100 o C. The boiling point of hydrogen peroxide is about 150 o C. Does this make sense? Why or why not. (1 point) Responses  Yes, it makes sense, because we expect products and reactants to have different properties. Yes,
c. What is the atomic number of carbon?(1 point) Responses  6 6  12 12  12.011
How many protons does one atom of boron have?(1 point) Responses  5 5  6 6  10 10  10.81
What is the chemical symbol for sodium? (1 point) Responses  Na Na  N N  NA
c. Aria and Marcus combine 180 grams of sugar with 192 grams of oxygen gas. What would they expect the total mass of the products to be? Why? You can use the calculator (below the answers) if desired. (1 point) Responses The total mass of the products
c. Aria and Marcus combine 180 grams of sugar with 192 grams of oxygen gas. What would they expect the total mass of the products to be? Why?
What does the law of conservation of matter (or the law of conservation of mass) tell the students?(1 point) Responses  Matter might be lost in a chemical or physical process. Matter might be lost in a chemical or physical process.  Matter is never
