All categories

4 years ago

In the chemical formula 2NO2 how many atoms ot oxygen are there

Physics

2 answers:

larisa86 [58]4 years ago

8 0

Four O atoms bc in one NO2 molecule there are 2 O atoms, so in two NO2 molecules there would be four :)

mina [271]4 years ago

5 0

I think there are four total.
This comes from adding the 1 O from the NO to 2O from the O2. However the oxygen needs to be balanced.
Multiplying the left NO and the NO2 on the right side by 2 you get:
2NO + 2O -> 2NO2
Left to Right:
2 x 1 N =2N -> 2 x 1 N = 2N

2x(One) Oxygen+ O2 (Two Oxygen) = Four Oxygen or 4O

You might be interested in

A kayaker paddles at 4.0 m/s in a direction 30° south of west. He then turns and paddles at 3.7 m/s in a direction 20° west of s

vichka [17]

Answer:

Magnitude of resultant velocity of kayaker to the nearest tenth = 10 m/s

Direction of resultant velocity of kayaker = 49.32⁰ South of west.

Explanation:

Let east represents positive x- axis and north represent positive y - axis. Horizontal component is i and vertical component is j.

First kayaker paddles at 4.0 m/s in a direction 30° south of west, kayaker paddles at 4.0 m/s in a direction 210° anticlockwise from positive horizontal axis.

So velocity of kayaker = 4 cos 210 i + 4 sin 210 j = -3.46 i - 2 j

He then turns and paddles at 3.7 m/s in a direction 20° west of south, kayaker paddles at 3.7 m/s in a direction 250° anticlockwise from positive horizontal axis.

So that velocity = -1.27 i - 3.48 j

So resultant velocity of kayaker = -3.46 i - 2 j +(-1.27 i - 3.48 j) = -4.71 i - 5.48 j

Magnitude of resultant velocity of kayaker = $\sqrt{(-4.71)^2+(-5.48)^2} = 7.23 m/s$

Magnitude of resultant velocity of kayaker to the nearest tenth = 10 m/s

Direction of resultant positive horizontal axis, θ = tan⁻¹(-5.48/-4.71) = 229.32⁰ = 49.32⁰ South of west.

6 0

3 years ago

Read 2 more answers

3. A tire swing is hanging from a tree. Diagram the forces acting on the swing.

kicyunya [14]

Gravity and the string

7 0

3 years ago

Read 2 more answers

A long, nonconducting cylinder (radius = 6.0 mm) has a nonuniform volume charge density given by αr2, where α = 6.2 mC/m5 and r

erastovalidia [21]

Answer: 2.80 N/C

Explanation: In order to calculate the electric firld inside the solid cylinder

non conductor we have to use the Gaussian law,

∫E.ds=Q inside/ε0

E*2πrL=ρ Volume of the Gaussian surface/ε0

E*2πrL= a*r^2 π* r^2* L/ε0

E=a*r^3/(2*ε0)

E=6.2 * (0.002)^3/ (2*8.85*10^-12)= 2.80 N/C

5 0

4 years ago

1. When two atoms of the same nonmetal react, they often form a(an)

kkurt [141]

When two atoms of the same nonmetal react,they form what we know today as a diatomic molecule.

Please mark brainliest. :)

7 0

3 years ago

A communication satellite is in a circular path orbit around Earth. If the speed of the satellite is constant, the net force act

allsm [11]

Answer:

is changing in direction, but constant in magnitude

Explanation:

This question is a bit tricky since the velocity of the satellite is changing, but the speed is constant.

Speed is simply a measure of how fast you are going. It doesn't matter where you're going, just how quickly.

Velocity, on the other hand, does care about which direction you're going. For example, it could be then when you travel right, your velocity is positive, and when you travel left, your velocity is negative. This is the similar for a 2D shape like a circular orbit

Since we know velocity is changing, there must be acceleration which changes that velocity (since acceleration is the change in velocity: going from 0 to 60 mph, for example)

Thus, with a non-zero net acceleration, we know that there must be a force that is changing in direction, but constant in magnitude (since the orbit is a circle, and always attracted to the center of the Earth at equal distance).

4 0

3 years ago