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nata0808 [166]
3 years ago
13

An astronomer has proposed a new theory about the evolution of the universe. What is the next step that the astronomer should ta

ke to make his theory reliable?
Chemistry
2 answers:
tatiyna3 years ago
4 0
Test his theory like a model theory or research more common ideas
qaws [65]3 years ago
3 0

Answer:

consensus on the theory from experimentation  

Explanation:

Once the astronomer has proposed a new theory, he must evaluate methods of experimentation that provide experiments that allow his theory to be confirmed or refuted.

These experiments can be defined as sets of procedures by means of which the astronomer will be able to propose a set of explanations for phenomena, constitution and formation of materials that are involved in his theory.

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If ine mole of pennies were divided amung 250 million peoplein
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Answer:

2.4088\times 10^{13} dollars each person will receive.

Explanation:

Number of people in which 1 mole of pennies is distributed = 250 million =

1 million = 10^6

250 million = 2.5\times 10^8 persons

Number of pennies in 1 mole = 6.022\times 10^{23}

Pennies per person:

\frac{6.022\times 10^{23} pennies}{2.5\times 10^8 persons}=2.4088\times 10^{15} pennies/person

1 penny = 0.01 $

2.4088\times 10^{15} pennies/person=2.4088\times 10^{15}\times 0.01 \$/person=2.4088\times 10^{13} \$/person

2.4088\times 10^{13} dollars each person will receive.

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The oeriodic table have 8 groups

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C) rusting ability

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What are the building block of lipids?
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fatty acids

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6 0
3 years ago
A particular isotope of uranium has a nucleus with 92 protons and 143 neutrons identify this isotope in two diffrent ways
inn [45]

Isotopes can represented in two ways. In the first way, the element's symbol is used with mass number at the upper left and atomic number written on the lower left of the symbol. In the other form of representation, the isotope name is written with a dash and mass number.

Given that the isotope has 92 protons. So the atomic number is 92.

The isotope has 143 neutrons

So the mass number = Total number of protons + Neutrons

                                  = 92 + 143 = 235

Therefore, the two ways of representing the isotope is:

1. ^{235}_{92} U

2. Uranium-235

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3 years ago
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