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kramer
2 years ago
12

Mars is red due to red soil rich in iron oxide (rust). Is the oxidation of soil to rust a PHYSICAL or CHEMICAL change How do you

know?
Chemistry
1 answer:
Vikentia [17]2 years ago
6 0
Oxidation is a chemical change because the atoms in the molecules are being rearranged to form the products
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Please Help!!<br><br> How does alpha decay change the nucleus of radioactive atom.
cluponka [151]

Answer:

When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number 2 less than the starting atom.

Explanation:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number 2 less than the starting atom.

Properties of alpha radiation:

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

5 0
3 years ago
Will mark brainliest!
777dan777 [17]
People use data tables and graphs in many financial careers and when looking at the statistics for something as simple as what they saw on the news, etc. When scientists use them, they’re both using them to see the numbers and the facts. They’re both able to use graphs and data tables to help them. They are different though because scientists use them for science related things like how much a tree grew in a year while everyday people use them to see the average amount of drop outs per year or something along those lines.

Data tables and graphs are very vital to a scientists job. They help them easily collect and organize information to where anyone can read it. It may not be absolutely necessary, but it’s something every scientist uses.

Any scientist doing any sort of research would use them. Whether they’re a biologist, geologist or whatever, they all use graphs and data tables to help them organize their research.
4 0
2 years ago
128g of sulphur are burned in excess oxygen. What mass of sulphur dioxide forms? S + O2 --&gt; SO2 *
Rasek [7]

Mass of Sulphur dioxide : 256 g

<h3>Further explanation</h3>

Given

Reaction

S + O2 --> SO2 *

Required

Mass of Sulphur dioxide

Solution

mol of Sulphur (Ar=32 g/mol) :

mol = mass : Ar

mol = 128 : 32

mol = 4

From the equation, mol ratio S : SO2 = 1 : 1, so mol SO2 = 4

Mass of SO2 :

mass = mol x MW SO2

mass = 4 x 64

mass = 256 g

5 0
2 years ago
Some covalent compounds contain atoms of just one element. true or false?
kifflom [539]
True, because diatomic elements (H2, O2, F2, Br2, I2, N2, Cl2) consist of only one element but are molecules with covalent bonds.
6 0
3 years ago
The ____ formula is the combination of chemical symbols and numbers that represent the elements and number of atoms within a com
Strike441 [17]

Answer:

Chemical

Explanation:

The Chemical formula is the combination of chemical symbols and numbers that represent the elements and number of atoms within a compound.

8 0
3 years ago
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