Archive day

December 18, 2025

1,693 public questions were asked on this day.

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In the diagram below, the height of a flagpole is labeled h . A right triangle is formed by a flagpole, the ground, and a line connecting the top of the flagpole to a point on the ground. The leg of the triangle correspo...
Asked by ., 1 answer
A positive ion is known as a(n) ionic radius valence electrons cation anion
Asked by john 1 answer
Atoms of the same element with different numbers or neutrons are called ________. isotopes metals radioactive elements metalloids
Asked by ja 1 answer
Ina is given the theorem and diagram below. She constructs the outline of a proof below to show that lines w and x are parallel. Consecutive Interior Angles Theorem: If two lines are parallel, the interior angles on the...
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In a solution, the substance that is being dissolved is the _______. liquid solvent gas solute
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Which type of reaction almost always produces water and carbon dioxide? double repalcement combustion decomposition single replacement
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ionic radius anion cation valence electron
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Why do the noble gases Not form compounds? They have seven electrons in their outer energy level. Their outer energy levels are completely filled with electrons They have empty energy levels. They have no electrons.
Asked by lee 1 answer
Which best analyzes the poet’s use of line breaks and its effect? A. Line 1 is enjambed, running into the next line, echoing the way the train stops abruptly at the station. B. Line 1 is end-stopped, echoing the way the...
Asked by aubrey 1 answer
The two right triangles below both have an interior angle that measures 35°. Two right triangles of different size are shown. Each triangle has one interior angle labeled 35 degrees. Which statement best explains why the...
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Vertical columns of elements on the periodic table are called: groups periods protons compounds
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A molecule that is positively charged on one end and negatively charged on the other end is _____. nonpolar a hydrocarbon radioactive polar
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The number of valence electrons in Group 17 elements is 7 8 17 18
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In line 1, the poet uses learn'd, which is a contraction of the word learned. Using context clues, choose the meaning of learn'd as it is used in the poem. A. boring B. famous C. respectable D. knowledgeable
Asked by aubrey 1 answer
When a log burns in a fire, _____________. new substances are formed. mass is lost. mass is gained. a physical change has occured.
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Matter that has a definite volume but no definite shape is _____. plasma liquid solid gas
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Which is equal to cos 27 ° ? A. sin 27 ° B. cos 57 ° C. sin 63 ° D. cos 63 °
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A chemical bond results from the mutual attraction of the nuclei of atoms and electrons protons neutrons dipoles
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How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable? 2 8 6 4
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Atoms are ____ when they are combined more stable less stable not bound together with a higher energy state.
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Which of the following best describes how the poet uses alliteration to enhance the poem’s meaning? A. The alliteration in the words “heard" and “learn’d” (line 1) helps suggest the wisdom of the astronomer. B. The allit...
Asked by aubrey 1 answer
What is the product of the polynomials 3 x − 8 and − 6 x + 12 ? A. 66 x − 96 B. − 18 x 2 − 12 C. 18 x 2 − 12 x − 96 D. − 18 x 2 + 84 x − 96
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What is the total number of atoms in the compound Ca3(Cl3)2 5 3 2 9
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A chemical bond resulting from the electrostatic attraction between positive and negative ions is called a(n) covalent bond ionic bond charged bond electron configuration
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A covalent bond results when ____ are shared. protons neutrons electrons dot strucutres
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