1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tester [92]
3 years ago
7

Pls helps fast test due soon!!!

Chemistry
1 answer:
Elanso [62]3 years ago
5 0

Answer: 8 is the number of neutron

Explanation:

You might be interested in
What would indicate that a physical change takes place when copper is drawn into wire?
Lina20 [59]

Any change in which the composition of material does not change that is it retains its identity but changes its state or form is known as a physical change.

The properties of metal to draw them into wires is known as ductility.  When a copper is drawn into wire the only change that occurs is change in its shape and size no change will take place into its composition that is the wires are still possessing the properties of copper metal. Thus, a physical change takes place when copper is drawn into wire.

8 0
3 years ago
Read 2 more answers
Example of nobel gas​
yanalaym [24]

Answer:

helium , krypton,xenon,radon, argon are noble gasses

5 0
3 years ago
Read 2 more answers
Branches are thrown into a wood chipper and mulch is created. Chemical change or physical change?
murzikaleks [220]

Answer:

it's a physical change

Explanation:

there there was no burning it was grabbing and just cutting

5 0
3 years ago
The frequency of an x-ray wave is 3.0 x 1012MHz. Its wave speed is 3.0x 108m/s. Calculate the wavelength of the x-ray wave below
jasenka [17]

Answer: The wavelength of the x-ray wave is 10^{-10}m

Explanation:

To calculate the wavelength of light, we use the equation:

\lambda=\frac{c}{\nu}

where,

\lambda = wavelength of the light  = ?

c = speed of x-ray= 3.0\times 10^8m/s

\nu = frequency of x-ray = 3.0\times 10^{12}MHz=3.0\times 10^{18}Hz= 3.0\times 10^{18}s^{-1}     (1Hz=1s^{-1})

Putting in the values:

\lambda=\frac{3.0\times 10^8m/s}{3.0\times 10^{18}s^{-1}}=10^{-10}m

Thus the wavelength of the x-ray wave is 10^{-10}m

5 0
3 years ago
If you burn 28.2g of hydrogen and produce 252g of water, how much oxygen reacted
andrey2020 [161]
15% oxygen is reacted
6 0
3 years ago
Other questions:
  • How many grams of oxygen are required to produce
    7·1 answer
  • A scientist should not let their research and study be influenced by _____. (can be more than one answer) ethnicity gender natio
    12·2 answers
  • 1.In class, students learned that a cart will move when a force of 50 N or greater is applied. A student pushed on the cart with
    9·1 answer
  • The standard enthalpy of formation of Ca2+ (g) (∆H = 1934 kJ/mol)
    5·1 answer
  • Rust forming on a piece of iron is an example of which of the following? *
    13·1 answer
  • You can prepare a buffer solution by combining equal moles of which pair of substances?
    10·1 answer
  • In Experiment 1, salicylic acid was treated with an excess of acetic anhydride to synthesize aspirin. Once the reaction went to
    14·1 answer
  • What does the p mean in 1s22s22p63s1?
    14·1 answer
  • Which one is location 3 in___<br><br> Arm <br><br> Center
    5·2 answers
  • What is the volume of a solution that has a specific gravity of 1. 2 and a mass of 185g.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!