Chemistry, 24.07.2019 15:30 maribelsalgado3
Paul’s science class fills an ice cube tray with water. the tray is placed in a freezer for a day. the water freezes forming ice. the tray is removed from the freezer and left on a counter for a day. what changes as the water freezes to ice and then melts back into liquid water? a) mass of the water molecules eliminate b) number of water molecules c) volume of water in the tray d) amount of energy in the water
Answers: 1
Chemistry, 21.06.2019 16:30
Where are each of the three particles located within the atom?
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Chemistry, 22.06.2019 02:00
The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?
Answers: 3
Chemistry, 22.06.2019 04:30
How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.
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Chemistry, 22.06.2019 12:20
The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397
Answers: 2
Paul’s science class fills an ice cube tray with water. the tray is placed in a freezer for a day. t...
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