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statuscvo [17]
3 years ago
8

What isotope has 13 protons and 14 neutrons? enter the name of the element followed by a hyphen and the mass number (e.g., urani

um-234)?
Chemistry
1 answer:
soldier1979 [14.2K]3 years ago
6 0
13 protons = Aluminum

13+14 = 27
<u><em>
Aluminum-27</em></u>
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Select the correct answer. Who can witness a lunar eclipse? A. People in the specific area of Earth's surface covered by the Moo
Lapatulllka [165]

Answer:

B. All people on the night side of Earth

Explanation:

A lunar eclipse is a phenomenon that occurs when the Earth comes between the Moon and the Sun thereby causing it to cover the Moon with its shadow.  

Simply stated, lunar eclipse takes place when the Moon passes or moves through the Earth's shadow thereby blocking any ray of sunlight from reaching the Moon. Thus, the full moon appears deep red (blood moon).

Also, a lunar eclipse would occur only when the Sun, Earth, and Moon are closely aligned to form a straight line known as the syzygy.

There are three (3) types of lunar eclipse and these are;

1. Total lunar eclipse.

2. Partial lunar eclipse.

3. Penumbra lunar eclipse.

<em>In a nutshell, all people on the night side of Earth can witness a lunar eclipse and have a good view of the Moon. </em>

6 0
3 years ago
Read 2 more answers
When you push down on a block resting on a table, block atoms and table atoms that are in contact with one another
poizon [28]
Option D. maintain their positions.

Pressure does not modify the relative position of the atoms in solid matter. The atoms are kept in position by the atomic and molecular bonds  whose length is a feature of every pair of atoms.

For example, all the bonds of C-C and C-H in the wood will have the same bond length
8 0
3 years ago
What is formula of matter
lbvjy [14]

Answer:

density = mass/volume.

Explanation:

6 0
3 years ago
Which term describes matter that is a substance made of diffrent kinds of atoms bonded together
Alex777 [14]
Compounds are substances made of at least 2 different elements. Molecules have at least 2 atoms, doesn't have to be different elements. Compounds and molecules both work.
8 0
3 years ago
Suppose a piece of silver jewelry contains 5.23×1022 atoms of silver (ag). part a how many dozens of silver atoms are in the pie
IgorC [24]
Answer:
number of dozens = 4.35834 * 10^21 dozens

Explanation:
A dozen contains 12 atoms. To know the number of dozens containing
5.23 * 10^22 atoms, all we have to do is cross multiplication as follows:
1 dozen ...........> 12 atoms
?? dozens ......> <span>5.23 * 10^22 
number of dozens = (</span><span>5.23 * 10^22 *1) / (12)
number of dozens = 4.35834 * 10^21 dozens

Hope this helps :)</span>
7 0
3 years ago
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