How does the mass of the electron compare to the masses of the proton and neutron?
Answers
The mass of protons and neutrons are both 1 amu (atomic mass unit). The mass of the electron is 0.00054. Therefore, when determining the isotopes when given mass, you only focus on the neutrons as they are the subatomic particles that are significantly affecting the atomic mass.
Related Questions
Explain how the scientific method helps scientists.
What is the effect of an increase in the average kinetic energy of an object
Which elements are found in all living things? 30 POINTS!!carbon, oxygen, potassium, calcium, nitrogen, sulfur hydrogen, phosphorus, oxygen, calcium, nitrogen, sulfurcarbon, hydrogen, phosphorus, oxygen, nitrogen, sulfurhydrogen, oxygen, potassium, calcium, nitrogen, sodium
A certain unknown compound burns with a violet flame. What metal is present in the unknown compound? What is the evidence?
B) Kingdom
C) Order
D) Phylum
Answers
Answer: Phylum
Explanation:
A notochord can be defined as the beginning to the backbone which is primitive. It appears in the embryos as a flexible rod which is made from the germ layer called as mesoderm.
It is one of the 3 layers that is found in the body. These layers are ectoderm, endoderm and mesoderm.
Notochords are only found in the phylum chordata. This phylum belongs a group of animals which includes human.
a. How many grams of Na20 are produced when 57.5 g of Na
reacts ?
b. If you have 18.0 g of Na, how many grams of O2 are
required for reaction?
c. How many grams of O2 are needed in a reaction that
produces 75.0 g of Na2O?
Answers
Answer:
Explanation:
a )
4Na(s) + O₂(g) - - 2Na₂O(s)
4 x 23g 32g 2x62
92 g of Na produces 124 g of Na₂O(s)
57.5 g of Na produces (124 / 92) x 57.5
= 77.5 g of Na₂O(s)
b )
92 g of Na requires 32 g of O₂
18 g of Na requires ( 32 / 92 ) x 18
= 6.26 g of O₂
c )
128 g of Na₂O(s) requires 32 g of O₂
75 g of Na₂O(s) requires ( 32 / 128 ) x 75
= 18.75 g of O₂
Answers
Answer:odium
Explanation:
Final answer:
Among the metals Sodium, Rubidium, Aluminum, and Indium, Rubidium is the most reactive due to its position in the alkali metals group in the periodic table. The reactivity of metals increases as you go down in any group.
Explanation:
The question asked was: 'Out of Sodium, Rubidium, Aluminum, and Indium, which is the most reactive metal?' In the periodic table of elements, reactivity of metals increases as we move down in any group. Sodium and Rubidium are alkali metals present in Group 1. Out of these two elements, Rubidium is further down in the group and is thus more reactive compared to Sodium. However, Aluminum and Indium belong to different groups and are relatively less reactive when compared to alkali metals.
Passivation, or the formation of nonreactive film of oxide on metals such as Aluminum, makes them less reactive compared to alkali metals, which readily react with water and oxygen. In conclusion, among Sodium, Rubidium, Aluminum, and Indium, Rubidium is the most reactive metal.
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Is mass conserved when 10 g of sodium hydroxide undergoes a chemical change during an interaction with 57 g of copper sulfate? Use complete sentences to support your answer by explaining how this can be demonstrated.
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please use complete sentences for the answer/an explanation, i'm confused on this questionn v( ‘.’ )v ...
Answers
Answer:Instead of “theory” scientists use the word hypothesis to describe a possible explanation for a scientific mystery. Theories in science are hypotheses that.
Explanation:
Answers
The standard units of measurement are particularly important to scientists because they make the result more accurate and precise.
What are accuracy and precision?
When the average value of the different measurements is similar to the correct value then the measurement is said to be accurate and the phenomenon is said to be accurate.
When the values of measurement are close to each other then the result is said to be precise and the phenomena are said to be precise and need to do for the better accuracy of results.
Therefore, they make the result more accurate and precise.The standard units of measurement are particularly important to scientists.
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Answer:
Explanation: The standred units of measurments are important to scientists because they are the same measurments that all scientist take to make sure that they all have the correct results.