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Questions (6)
Use the paragraphs below to complete the activity.
Recycling reduces the amount of waste sent to community landfills. The less
9 answers
115 views
i hungry
15 answers
72 views
Add: 1/2(x+4)+1/4(4x−2) . Answer should be in mixed number form
1 answer
58 views
Which discovery would have the greatest impact on reducing the negative consequences of plastic?(1 point)
Responses the discovery
33 answers
212 views
A scuba diver was at a depth of 15 meters below the surface when she saw something interesting about 10 meters lower. She made
7 answers
230 views
What is the role of the government in a mixed economy?
short examples
5 answers
67 views
Answers (33)
Think about what career you would like to pursue in the future. Draft a central idea about the topic. Write three to five sentences that could serve as an introduction to an essay about a career you would be interested in pursuing. Include one fact, two
Use the paragraph to complete the activity. We all know that exercise is essential for good health. People mostly focus on the kind of exercise they do. Recent research indicates, however, that the time intervals of your exercise is more important. For
Think about what career you would like to pursue in the future. Draft a central idea about the topic. Write three to five sentences that could serve as an introduction to an essay about a career you would be interested in pursuing. Include one fact, two
Use the excerpt to complete the activity. While many students become involved in sports simply because they love the game, organized team sports offer several significant benefits. Teamwork Organized team sports are centered around multiple students
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Use the chemical equation to complete the activity. 2Cu+S→Cu2S Copper (Cu) reacts with sulfur (S) to form copper sulfide as shown in the equation. A scientist adds 12.7 grams of Cu to 3.2 grams of S to start the reaction. In this reaction, all of the
Question The image shows a model of sulfuric acid. In the middle is one yellow ball. Four red balls are attached to the yellow ball with sticks. Two of the red balls have a blue ball attached with sticks. In total, there is 1 yellow, 4 red, and 2 blue
Use the unbalanced chemical equation to answer the question. 2NaHCO3 → Na2CO3 + CO2 Which of the following can be added to the products to balance the equation? (1 point) Responses H2 H 2 H2O H 2 O O2 O 2 CH2OH
One molecule of bromine (Br2) and two molecules of potassium chloride (KCl) combine in a reaction. How many atoms are in the products?(1 point) Responses four four three three six six two
Which procedure could be used to demonstrate that matter is conserved during a physical change?(1 point) Responses Find the mass of a raw egg. Cook the egg. Find the mass of the cooked egg. Find the mass of a raw egg. Cook the egg. Find the mass of the
Sodium reacts with chlorine to form the compound sodium chloride, or salt. The chemical formula below shows how the two elements combine into a compound. 2Na + Cl2 → 2NaCl If the total mass of the reactants is 58.44 amu, what will be the total mass of
How does a balanced chemical equation demonstrate the Law of Conservation of Mass?(1 point) Responses it shows that no atoms have been gained or lost during the reaction it shows that no atoms have been gained or lost during the reaction it shows that only
How are chemical changes different from physical changes?(1 point) Responses They form new substances. They form new substances. They are reversible. They are reversible. They include shifts in the phase of matter. They include shifts in the phase of
A student cuts some fabric into two pieces. Is this change physical or chemical?(1 point) Responses It is a physical change because the process is reversible. It is a physical change because the process is reversible. It is a chemical change because there
Why are sodium (Na) and potassium (K) in the same group on the periodic table?(1 point) Responses They have similar atomic weights. They have similar atomic weights. They are both hard and brittle. They are both hard and brittle. They are both colorless.
Which element has the same number of valence electrons as bromine (Br)? (1 point) Responses krypton (Kr) krypton (Kr) potassium (K) potassium (K) chlorine (Cl) chlorine (Cl) selenium (Se)
In a molecule of lithium sulfide, there are two atoms of lithium and one atom of sulfur. Which statement about lithium sulfide is correct?(1 point) Responses A molecular model of lithium sulfide would have two spheres. A molecular model of lithium sulfide
Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement about the model is correct?(1 point) Responses The model should show 27 protons and 32 neutrons. The model should show 27 protons
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It is recommended that hikers drink 24 ounces of water an hour. If a canteen has 24 ounces of water, how much should the amount of water in the canteen change every 10 minutes?(1 point) Responses 0.4 ounces 0.4 ounces −0.4 ounces negative 0.4 ounces −4
Question Solve using division of rational numbers. If a car’s value decreases by $4,000 in the first 12 months, how much does the value decrease per month? (Round to the nearest hundredth.)(1 point) Responses $333.33 $333.33 −$333.33 negative 333.33
Describe the major physical and human features of the location where you live, such as the landscape, weather, and population. What theme of geography are you using in your description?
How does the tilt of Earth’s axis and its movement around the sun play a part in the changing of the seasons in the Northern Hemisphere? short examples
1. the portion of the books in the library that are how-to books on electronics 2. not enough information 3. 15.96 mi2 4. −64.8 ft. 5. 1 2/3 ft
