Helium is an inert gas used in lighter-than-air crafts like blimps because
it is nonflammable. It is formed deep underground over millions of
years as a by-product of the formation of natural gas. Almost all of the
world's helium is found in deep deposits of natural gas within 250 miles
of Amarillo, Texas. Helium can be considered what type of natural
resource? SC.G.2.3.1
A. a fossil fuel
B. a renewable resource
C. a part of the carbon cycle
D. a nonrenewable resource
Answer:
D. a nonrenewable resource
Explanation:
From the description given, helium is a non-renewable resource.
A non-renewable resource is one in which cannot be replenished by natural processes as they consumed. They get depleted as they are removed from nature. Helium formation cannot match its consumption if exploited.A car traveling initially at 7.35 m/s acceler-
ates at the rate of 0.824 m/s² for 2.09 s.
What is its velocity at the end of the accel-
eration?
Answer in units of m/s.
Answer:
[tex]v_f=9,07~m/s[/tex]
Explanation:
Constant Acceleration Motion
It's a type of motion in which the velocity of an object changes uniformly in time.
Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:
[tex]v_f=v_o+at[/tex]
The car initially travels at vo=7.35 m/s and accelerates at a rate of [tex]a=0.824~m/s^2[/tex] during t=2.09 s.
The final velocity is:
[tex]v_f=7.35+0.824*2.09[/tex]
[tex]\mathbf{v_f=9,07~m/s}[/tex]
which type of bond will sulfer (S) and nitrogen (N) form?
a. metallic bond
b. covalent bond
c. iconic bond
Answer:
In ionic compounds, electrons are transferred between atoms of different elements ... For example, two hydrogen atoms bond covalently to form an H2 molecule; each ... is released when one mole of H2 molecules forms from two moles of H atoms: ... atom in each pair is more electronegative: (a) N or P. (b) N or Ge. (c) S or F.
Explanation:
high school and collage students answers only.
Are all compounds molecules? Why or why not?