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dsp73
3 years ago
7

An object that is moving will stop when​

Chemistry
2 answers:
Snowcat [4.5K]3 years ago
5 0

Answer:

something pushes or pulls it to a stop.

Doss [256]3 years ago
4 0

Answer:

factor

Explanation:

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Identify the type of reaction described in the sentence below. then, write a chemical equation. be sure to specify the states of
natulia [17]

Answer : The type of reaction described in the sentence is Synthesis or Combination

Explanation :

The balanced equation for the reaction between Phosphorous and Oxygen gas can be written as

4P (s) + 5O_{2} (g) ------>  P_{4} O_{10}  (s)

From the above equation we can see that there are two different reactants ( P and O₂ ) which are combining with each other to give a single product.

This type of reaction is known as Combination or Synthesis.

A general form of Synthesis reaction is given below.

A + B ---->  AB

Here we can conclude that a synthesis / combination reaction is the one where 2 or more reactants combine together to give only one product .

6 0
3 years ago
Plants and animals that survive in their environment reproduce and pass on their genes. In their turn, their offspring that surv
LiRa [457]
It’s called the Evolution
5 0
2 years ago
Read 2 more answers
Calculate the maximum KE and velocity of an electron from zinc by a 275nm photon
Dmitry [639]

Answer:

Kinetic energy: 6.024*10^{-20}

Velocity: 3.64*10^{5}

Explanation:

From the equations of the photo-electric effect,

We know:

hv=hv_0+K.E

Where,

1.h is the Planck's constant which is 6.626*10^{-34}

2.v,v_0 are the frequency of light emitted and threshold frequencies respectively.

3.K.E is the kinetic energy of the electrons emitted.

By fact, we come to know that the threshold frequency of Zn is 300nm

And also v=\frac{c}{d}

Where ,

1. c is the speed of light =3*10^8

2.d is the wavelength.

Thus,

\frac{hc}{d}=\frac{hc}{d_0}+K.E\\K.E=\frac{hc}{d}-\frac{hc}{d_0}\\K.E=hc*(\frac{1}{d}-\frac{1}{d_0})\\K.E=6.626*10^{-34}*3*10^8*(\frac{1}{275*10^{-9}}-\frac{1}{300*10^{-9}})\\K.E=6.024*10^{-20}kgm^2s^{-2}

Now to find velocity:

K.E=\frac{1}{2}mv^2\\v^2=1.324*10^{11}\\v=3.64*10^5

8 0
3 years ago
Determines the mass of the atom
Marizza181 [45]

Answer:

No of neutrons and protons decides mass of the atom. Electrons having negligible

mass are ignored.

Mass of atom

Mass of atom= sum of no of protons(Z) and neutons(N)

=Z+N

For eg:

In hydrogen atom,

Mass of H= Z+N

=1+0

=1 AMU

5 0
2 years ago
1. How many moles of carbon are in 2.25 * 10^22 atoms of carbon ?
tresset_1 [31]

Answer:

atoms of C? 2.25 x 1022 atoms C x 1 mole C = 0.037 mol C

Explanation:

 How many moles of C are in 2.25 x 1022 atoms of C?

3 0
2 years ago
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