Questions and answers by

nuh uhhhhh

Questions (126)

In the equation2H2+1O2→→2H2O if you change the 2H2 to 3H2 molecules and balance the equation, identify which statement is
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It takes 1 molecule of nitrogen and 3molecules of hydrogen to produce 2 molecules of ammonia using the following formula: 1N2+
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Which statement correctly explains why the ashes of burnt paper have less mass than the original paper?(1 point)Responses Some
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One molecule of calcium oxide, CaO, and one molecule of carbon dioxide, CO2, combine in a chemical reaction to form one
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When iron rusts and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this
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Use the periodic table to answer the question.An illustration shows the periodic table of elements. The elements in the periodic
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What are valence electrons?(1 point)Responses electrons that are shared between atoms electrons that are shared between atoms
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Which feature defines a neutral atom?(1 point)Responses the ability to change to another substance during a chemical reaction
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What does a closing statement do in a concluding section? Select the two correct answers.(1 point)Responses explains the entire
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What are a topic’s implications?(1 point)Responses how the future will be affected by the topic how the future will be
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What is the purpose of a concluding section? Select the two correct answers.(1 point)Responses to introduce a few additional
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Which statement is not true about friendships in the Spanish speaking world?(1 point) Responses Close friends of the family
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An artistic girl paints on a canvas.Question Which sentence best describes the content of the image? (1 point) Responses Ella es
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Which of the following options best analyzes how language can be a divisive force in states where most people speak the same
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Which option provides the best analysis of how cultural characteristics can link regions?(1 point)Responses The process of
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Which of the following best describes how cultural landscapes and patterns are influenced by innovation?(1 point)Responses
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Which of the following is the best definition of a formal region?(1 point)Responses a region with a clear political or physical
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Which of the following best explains why it is difficult to define a cultural region?(1 point)Responses It is difficult to
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Which of the following statements best evaluates the role of the Welsh language in Wales’s social culture?(1 point)Responses
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Which option best evaluates how Europe is connected to the Americas by culture?(1 point)Responses Europe and the Americas share
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Which description of Sudanese culture is correct?(1 point)Responses Bomba drums are used to tell current events. Bomba drums are
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From the Periodic table, it can be determined that iron (Fe) has an atomic mass of 56 amu, oxygen (O) has an atomic mass of 16
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What does the Law of Conservation of Mass say about a chemical reaction?(1 point)Responses Mass increases as atoms are
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What are the reactants in a chemical formula?(1 point)Responses the atoms after the chemical reaction, found on the right side
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Which of the following example demonstrates the reversibility of a chemical change?(1 point)Responses recharging batteries
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Which of the following demonstrates a chemical change?(1 point)Responses dry ice vaporizing dry ice vaporizing iron (Fe)
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Which of the following is an example of only a physical change?(1 point)Responses the creation of table salt the creation of
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Ammonia is a weak base. Potassium hydroxide is a strong base. Which statement is correct?(1 point)Responses A solution of
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A small amount of sodium hydroxide is added to water. When the chemical reaction reaches equilibrium, the pH is 12. Which
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What is the pH of a 1×10−4mol HCl solution?(1 point) Responses 6 6 8 8 2 2 4
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Use the periodic table to answer the question.An illustration shows the periodic table of elements with elements arranged in
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How is a mole related to concentration?(1 point)Responses The number of particles of solute in a solution is measured in moles.
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Which of these substances would be more soluble in cold water than warm water?(1 point)Responses sugar powder sugar powder
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Which statement best describes what happens when oil and water are stirred together?(1 point)Responses Oil and water molecules
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When salt dissolves completely in water, which term best describes the role of water in the salt-water mixture?(1 point)Response
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The relationships among which variable quantities are expressed by the ideal gas law equation?(1 point)Responses pressure,
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As the pressure of a gas decreases to half its original value, what happens to the volume of the gas if temperature is held
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Which phase change is the opposite of boiling?(1 point)Responses evaporation evaporation melting melting condensation
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Which sentence is written in a formal style and objective tone?(1 point)Responses A good book designer will always carefully lay
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What is domain specific vocabulary?(1 point)Responses vocabulary that is exact and vivid vocabulary that is exact and vivid
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Which transitions would best signal connections between ideas? Select the two correct answers.(1 point)Responses after all after
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Which transitions would most effectively begin a conclusion? Select the two correct answers.(1 point)Responses because because
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Which transitions would best show contrast between two or more ideas in a text? Select the two correct answers.(1 point)Response
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Use the paragraph to answer the question.Dogs need a lot of training and attention when they are puppies. Nevertheless, they
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What is a participial phrase?(1 point)Responses a word that precedes a noun and expresses a relationship between two parts of a
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Which statement best explains why it is important to make a transition to renewable energy?(1 point)Responses Fossil fuels
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What statement best explains why growing food crops had an advantage over hunting and gathering?(1 point)Responses Humans could
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Which of the following represents one of the ways technology has had negative impacts on the physical environment?(1 point)Respo
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Which of the following is an accurate statement about planet Earth?(1 point)Responses Planet Earth has been relatively stable in
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How is biodiversity and organism success related to tropical rainforests?(1 point)Responses If tropical rainforests are
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Which energy policy could be used to address environmental concerns around pollution and carbon emissions?(1 point)Responses
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Thailand is a state with a central territory and a long extension along a peninsula. What type of state is Thailand, and how
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How can access to oil lead to cooperation between countries?(1 point)Responses Countries without oil will often seek to
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Why has sustainable development become a priority for many industrialized countries?(1 point)Responses Sustainable development
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How can economic issues contribute to conflict between countries regarding resource use, and how have these issues been resolved
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Which of the following solutions for creating access to clean water can affect the environment by overdrawing groundwater? (1
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The Aral Sea is drastically smaller due to which practice?(1 point)Responses soil erosion soil erosion deforestation
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Which statement best describes how Hurricane Katrina changed the geography of the New Orleans, Louisiana, region?(1 point)Respon
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Which type of plate boundary created the Red Sea?(1 point)Responses geothermal plate boundary geothermal plate boundary
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Which statement best compares the United States and Mexico?(1 point)Responses There are more English speakers in Mexico than
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The Corn Belt is a(1 point)Responses formal region. formal region. county. county. functional region. functional region.
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What is the correct order of terms to match the following definitions?an area on Earth’s surface defined by relatively
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Why would a geographer choose a Robinson projection for a reference map in a textbook?(1 point)Responses The Robinson projection
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Which option best describes how multiple scales would be useful for studying flood risk?(1 point)Responses A small-scale map
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Which field of geography and geographic skills would be involved in using satellite imagery to look for concentrations of
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Use the image to answer the question.A map is titled City Subway System. A Key is labeled Subway Lines, and shows a dashed line
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Why would a geographer decide to use a proportional symbol map over a dot density map?(1 point)Responses A proportional symbol
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How might a geographer summarize and interpret spatial data from a GIS displaying data about the frequency and distribution of
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What does the imperative mood express?(1 point)Responses questions questions commands commands recommendations recommendations
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Use the sentences to answer the question.Mistakes were made. We will do all we can to correct them. How does the voice in these
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What is passive voice?(1 point)Responses a method of writing in which the actions are ascribed to the reader a method of writing
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After you investigate the effects of technological change on natural resource use, what statement could you make?(1 point)Respon
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Which agricultural system requires the lowest input of labor and energy?(1 point)Responses industrial agriculture industrial
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Which statement best summarizes the changes in agricultural techniques over time?(1 point)Responses Over time, agricultural
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Which answer best analyzes how technology is affecting the world?(1 point)Responses Technology is leading to less innovation.
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Which of the following statements critiques technology’s impact on the physical environment?(1 point)Responses Dams help
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Which of the following is an accurate definition of biogeography?(1 point)Responses the study of the purposeful clearing of a
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Satellite imagery can be used to better understand certain changes on Earth. Identify the best use of satellite imagery from the
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When goods go straight from the place that they are manufactured to the public this is called:(1 point) Responses producer
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How are in-text citations formatted in MLA style? Select the three correct answers.(2 points)Responses at the end of a paragraph
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Which qualities are the most important for information in an explanatory essay? Select the three correct answers.(2 points)Respo
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Use the scenario to answer the question.You want to write an essay about how a specific law was passed. You hope to help the
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What important factors should a writer consider when choosing a text structure? Select the two correct answers.(1 point)Response
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Introductions Quick Check5 of 55 of 5 Items Feature Epidemiology’s Fight Against Ebola by Carol Hand Emile was a two-year-old
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Introductions Quick Check4 of 54 of 5 Items Feature Epidemiology’s Fight Against Ebola by Carol Hand Emile was a two-year-old
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Which change would decrease the pH of a base in a solution at equilibrium?(1 point)Responses increasing the initial
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Use the information in the table to answer the question.Acid pH of Solution HA 5.6 HB 3.9 HC 4.7 Which list shows the acidic
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Hydrochloric acid is a strong acid. Acetic acid is a weak acid. Which statement about hydrochloric acid and acetic acid is
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Which acid-base chemical reaction is irreversible?(1 point)Responses weak base added to water weak base added to water water on
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Which option correctly shows the concentration of H3O+ ions in pure water?(1 point)Responses 7 mol/L 7 mol/L 14 mol/L 14 mol/L
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How are acids and protons related? (1 point)Responses Acids are substances that contain fewer protons than bases. Acids are
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After which action would the concentration of a solution remain constant?(1 point)Responses adding solute to the solution adding
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Use the graph to answer the question.A line graph depicts the variation of the solubility of oxygen in water with temperature.
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Which option is a microscopic property that helps determine whether or not two substances will dissolve with each other? (1
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Which substance is an example of a nonpolar compound?(1 point)Responses vegetable oil vegetable oil food coloring food coloring
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Two balloons hold two different gases. The gases are held at the same pressure, volume, and temperature. Which quantity can
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When the pressure of a gas decreases, which quantity will increase, assuming all other variables are held constant?(1 point)Resp
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The ideal gas law is represented by PV=nRT. As volume is held constant and the temperature increases, how would the pressure be
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Which statement explains the molecular changes that occur in an enclosed gas as the pressure increases and the temperature is
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Which statement correctly describes the relationship between the volume of a gas and its temperature, in Kelvin, assuming
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