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NARA [144]
3 years ago
7

Help me with this chemistry question please.​

Chemistry
1 answer:
rodikova [14]3 years ago
4 0

Answer:

B) Because you are adding positively charged protons, which pull in the outer electrons.

Explanation:

Since the increase in protons have a greater effect then the increase in electrons the protons pull the electrons in closer resulting the radius of an atom to decrease from left to right across a period.

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Which of the following statements best compares the wavelengths of the regions of the electromagnetic spectrum? O Microwaves are
scZoUnD [109]

Answer:

infrared waves are longer than gamma rays

Explanation:

according to the order :

radio, microwaves, infrared, light, ultraviolet, X-ray, gamma rays

radio waves have the highest wavelenght and lowest frequency, gamma rays have the highest frequency and lowest wavelength.  

5 0
3 years ago
B) Name three substances which can undergo sublimation and deposition respectively​
SpyIntel [72]

solid carbon dioxide, iodine, arsenic, and naphthalene

Explanation:

Examples of substances that undergo sublimation

Examples of solids that sublime are dry ice (solid carbon dioxide), iodine, arsenic, and naphthalene (the stuff mothballs are made of).

3 0
3 years ago
How do you find the molar mass for ba(NO3)2
Korvikt [17]
To find the molar mass<span> of </span>Ba(NO3)2<span>, determine the </span>molar masses of all the atoms that form it. The Molar mass for Barium nitrate is <span>261.337 g/mol.</span>
8 0
3 years ago
Please Helpp
jasenka [17]

Answer:

Mitochondria - energy production in plant and animal tissue

Explanation:

The mitochondria is the power house of a cell. it contains adenosine-tri- phosphate or ATP molecules that produce energy through active transport. The mitochondria is responsible for energy production in both plant and animal cells

5 0
3 years ago
Determine whether a gas sample was composed of hydrogen or oxygen.
Nuetrik [128]
The test for this is fairly simple.
We take a glowing match or splint near the gas sample, if the glow intensifies, oxygen is present. 
If a lit splint or match goes out with a popping sound, this means that hydrogen is present.
5 0
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