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
Feliz [49]
3 years ago
13

Click the picture please

Chemistry
1 answer:
romanna [79]3 years ago
6 0

Answer:

A chemical change can be indicated by a change in color, change in temperature (exothermic or endothermic), change in smell, formation of a precipitate, or the formation of gas bubbles.

Explanation:

this should work

You might be interested in
Porcelain x has much smaller crystals in it than porcelain Y. suggest a reason for that
Artyom0805 [142]

Answer: 22

Explanation:

6 0
3 years ago
Show how to calculate the mass of a proton, neutron, and electron in kilograms using the data and the equality statement 1 amu =
barxatty [35]

Answer:

Proton: m= 1.6726x10⁻²⁷ kg

Neutron: m= 1.6749x10⁻²⁷ kg

Electron: m= 9.1164x10⁻³¹ kg

Explanation:

<u>We can calculate the mass of a proton, neutron, and electron using the following data:</u>

<em>mass of proton</em>: 1.00728 amu

<em>mass of neutron</em>: 1.00867 amu

<em>mass of electron</em>: 5.49x10⁻⁴ amu

<em>1 amu</em> = 1.66054x10⁻²⁷ kg

Now, the mass of a proton, neutron, and electron in kilograms can be calculated using the next relation:

m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot particle's mass (amu)

For the proton:

m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot 1.00728 amu = 1.6726 \cdot 10^{-27} kg

For the neutron:    

m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot 1.00867 amu = 1.6749 \cdot 10^{-27} kg

For the electron:

m = 1.66054 \cdot 10^{-27} \frac{kg}{amu} \cdot 5.49x10⁻⁴ amu = 9.1164 \cdot 10^{-31} kg    

I hope it helps you!

4 0
3 years ago
Which of the following definitions best fits the definition of an environmental factor of an organism's
Vaselesa [24]

Answer:

<u><em>B.)</em></u>

<u><em>An environmental factor is a characteristic of the environment that changes how an organism interacts with the environment</em></u>

Explanation:

Hope this helps:)

8 0
3 years ago
Describe why estimating the age of the Sun can give an approximate age of the Earth.
ch4aika [34]
Because the earth wouldn't be able to exist without the help of the sun, the sun is essential for earth.
6 0
3 years ago
If you did not use a watch glass to cover your stock iodine solution, and the concentration of iodine decreased over the course
anygoal [31]

Answer::

<u><em>Lower rate of reaction</em></u>

Explanation:

Lower concentration of reactant in an experiment is indicative of fewer ions or atoms present, which means a slower rate of reaction. In a titration reaction for instance, the end point would take longer to be substantiated, thereby increasing volume of titres. This is further backed up by collision theory which states that more particles in a system improves combinations of molecules.

This however may not be the case if the iodine in question is  catalyst, in which case the change in concentration has no effect whatsoever on the reaction rte.

I hope this explanation fits the brief.

5 0
3 years ago
Other questions:
  • Please help! The answer has to have a decimal notation​
    15·1 answer
  • What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)?
    12·2 answers
  • Name 20 inorganic compounds
    6·1 answer
  • What is shielding effect?
    6·1 answer
  • Based on the kinetic theory, which statement is true?
    13·2 answers
  • Polywool fibre is<br> a.natural<br> b.synthetic<br> c.monomer<br> d.blended​
    6·2 answers
  • Which feature of the Galapagos Finch observed by Charles Darwin contributed to his theory of evolution?
    6·1 answer
  • How is a doorbell an example of an electrical transformation
    11·1 answer
  • If any girl want to be my girlfriénd?​
    11·2 answers
  • How many grams of oxygen are needed to react with 56.8 grams of ammonia?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!