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Yakvenalex [24]
3 years ago
11

Physical change is one that affects the physical properties of a substance true or false

Chemistry
1 answer:
barxatty [35]3 years ago
7 0
Yes this is a true statement
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What are the mountainous parts of the moon called? Question 3 options: craters terrae maria regolith
Xelga [282]

Answer:

The answer is Terrae

Hope this helps :)

plz mark brainliest :D

Explanation:

I go to K12

8 0
3 years ago
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Which of these items best describes the arrangement of electrons in an atom of sulfur? A. Two electrons in its first energy leve
Vesnalui [34]
Two electrons in it's first energy level; eight electrons in it's second energy level; and six valence electrons in it's outermost energy level
8 0
3 years ago
A space probe on the surface of mars sends a radio signal back to earth,a distance of 7.19 ×10⁷ km. Radio travel at the speed of
lys-0071 [83]

Answer:

240 seconds

Explanation:

Data Given:

Distance Radio travel to earth = 7.19 ×10⁷ km

Speed of this radio signal = 3.00 ×10⁸ m/s

Solution:

First convert Km to m

1 km = 1000 m

7.19 ×10⁷ km = 7.19 ×10⁷ x 1000 = 7.19 × 10¹⁰m

Formula used to calculate time

            Speed (S) = distance (d) / time (t)

rearrange above equation for time

            time (t) = distance (d) / Speed (S) . . . . . . . . .(1)

Put values in equation 1

            time (t) = 7.19 × 10¹⁰/ 3.00 ×10⁸ m/s

            time (t) = 240 s

So 240 seconds it take for the signal to reach the earth

6 0
3 years ago
In the following compound (HCl) How many electrons are gained and lost by each atom?
Verizon [17]

Explanation:

In HCL, one positive atom is given to chlorine from hydrogen so that it can complete it's octate. chlorine take one electron from hydrogen.

In NaCl, Sodium takes one electron from chlorine to complete its orbit with eight electrons. Chlorine gives one electron to sodium.

8 0
3 years ago
Pls help me also pls have the correct answer
Ann [662]

Answer:

       

Explanation:

       

4 0
2 years ago
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