3 years ago

What is the atomic number of hydrogen? A. 26 B. 14 C.35 D. 1

Physics

2 answers:

Elena L [17]3 years ago

8 0

Answer:

Explanation:

The atomic number of hydrogen is 1, because hydrogen is considered the number #1 element in the periodic table. Hope this helps!

Yakvenalex [24]3 years ago

7 0

Answer:

Explanation:

Hydrogen is the first element in the periodic table so its atomic number is 1.

You might be interested in

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. The temperature at the start of the reaction was

Minchanka [31]

Answer: The energy absorbed by the reaction from the water is 996 Joules.

Explanation:

Energy absorbed by the reaction or energy lost by the water to the reaction,Q.

Mass of the the reaction ,m = 60 g

Specific heat of water = c = 4.15 J\g ^oC

Change is temperature= $\Delta T=19^oC-23^oC=-4^oC$

$Q=mc\Delta T=60 g\times 4.15 J\g ^oC\times (-4^oC)=-996 Joules$

Negative sigh indicates that energy was given by the water to the reaction.

The energy absorbed by the reaction from the water is 996 Joules.

5 0

3 years ago

a cruise ship travels directly toward the dock with a velocity of 15 m/s relative to the water. A passenger walks 3 m/s in the s

solong [7]

Answer:

Explanation:

i believe a if not c

4 0

2 years ago

How many seconds will it take to travel 3,600 meters if your speed is 90 meters per second?

klio [65]

40

Because if you divide 3,600 by 90 it is equivalent to 40.

Hope this helps, have a blessed day :)

4 0

3 years ago

A cyclist starts from rest and coasts down a 4.0∘ hill. The mass of the cyclist plus bicycle is 85 kg. Ignore air resistance and

Angelina_Jolie [31]

A) change in ht after 180m = 180 * sin(4-deg.) = 12.56m

net work done by gravity on the cyclist = mass * gravity * height diff.

= 85 * 9.8 * 12.56

= 10470J

= 10.5kJ

B) Kinetic energy = 1/2 * mass * vel.^2 = work done by gravity = 10470J

vel.^2 = 10470 * 2 / 85 = 246.4

vel. = 15.7m/s

5 0

3 years ago

Something plus something equals total energy

dusya [7]

potential plus kinetic

7 0

3 years ago