Biology

Biology, 25.06.2019 01:30, anglegirl2313

Which state of matter could possibly change density? explain.

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Physics, 28.06.2019 16:10, Ladyt916

Cosmology has reached an era where precise calculations can be made of the contri butions of ordinary matter and radiation, dark matter, and dark energy, to the energy density of the universe. our universe at this time is thought to be dominated by dark matter and dark energy, which together make up about 95% of the energy density. or- di in the following, ? ? is the current nary matter and radiation make up the last 5% value of the density of dark energy, and s2m refers to the energy density of everything .all al mar, dark matter, aul ralati. a) what is the effect of dark energy on the expansion of the universe? explain how type ia supernova observations are used to constrain the relative contributions of dark energy and all other matter to the energy density of the universe.

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Physics, 25.09.2019 15:00, halloween212

What do we call solid h2o? what do we call gaseous h2o? what do we call liquid h2o? a is a state of matter that has a fixed or definite shape and volume. a is a state of matter that has a fixed or definite volume but takes the shape of its container. a is a state of matter that has no definite shape or volume. the particles of a have less attraction between them than the particles of the same substance in the solid or liquid state. when matter changes from one form to another we call it a change. melting is a change in state of matter from a to freezing is a change in state of matter from a to a liquid can change to a gas through two processes: evaporation - which happens at a temperature below the point, and vaporization - which happens at the substances boiling point. condensation is a change in state of matter from to sublimation is a change in state of matter directly from a to a without going through the liquid phase. the freezing point of a substance is the same temperature as the point of a substance. the condensation point of a substance is the same temperature as the point of a substance.

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Chemistry, 28.10.2019 23:31, JosefineRubino2204

With all 1. check all the statements that are correct. conservation of mass means: 1.matter can be destroyed in a chemical reaction 2.we can start a reaction with different types of elements than we have at the end of the reaction. 3.we must start and end with the same amounts of matter 4.matter cannot be created question 2 select all of the signs of a chemical reaction 1.a solid is formed 2.the change can be easily undone 3.the state of matter changes 4.a gas is released 5.a temperature change happens 6.a color change happens question 3 a chemical 1.creates one or more new substances 2.happens in the water cycle 3.is only a physical change 4.is when something changes the state of matter question 4 changing from one state of matter to another is a 1.physical change 2.chemical reaction 3.chemical change 4.optical illusion question 5 during a chemical 1.the substances change by rearranging the atoms and elements 2.matter can be destroyed 3.new matter is created 4.energy is created !

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Chemistry, 28.10.2019 23:31, natjon528

With all1.check all the statements that are correct. conservation of mass means: 1.matter can be destroyed in a chemical reaction2.we can start a reaction with different types of elements than we have at the end of the reaction.3.we must start and end with the same amounts of matter4.matter cannot be createdquestion 2select all of the signs of a chemical reaction1.a solid is formed2.the change can be easily undone3.the state of matter changes4.a gas is released5.a temperature change happens6.a color change happensquestion 3 a chemical 1.creates one or more new substances2.happens in the water cycle3.is only a physical change4.is when something changes the state of matterquestion 4 changing from one state of matter to another is a1.physical change2.chemical reaction3.chemical change4.optical illusionquestion 5during a chemical 1.the substances change by rearranging the atoms and elements2.matter can be destroyed3.new matter is created4.energy is created!

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