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Studentka2010 [4]
3 years ago
7

1. A scientific hypothesis can become a theory if ______.

Chemistry
2 answers:
OLga [1]3 years ago
8 0
1) - it can become a theory if the hypothesis is <span>tested extensively and competing hypotheses are eliminated - other options are not enough


2) This is a hypothesis. A theory is basically almost an established truth, which can still be changed with new data, but which as far as we know is true.</span>
Dominik [7]3 years ago
4 0

1) The answer is: B) the hypothesis is tested extensively and competing hypothesis are eliminated.

Theory is a tested, unifying explanation for a set of verified facts.  

Theory is a system of explanations that ties together a lot of facts.

Steps of the scientific method:  

1) ask a question about something that is observed.  

2) do background research.  

3) construct a hypothesis, an attempt to answer questions with an explanation that can be tested.  

4) test of hypothesis.  

5) analyze collected data and draw a conclusion.  

2) The answer is: D) hypothesis.

Hypothesis is a suggested explanation for an observable phenomenon.

Experimenters may test and reject several hypotheses before solving the problem.

A working hypothesis is provisionally accepted as a basis for further research.

A law in science is a generalized rule to explain a body of observations in the form of a verbal or mathematical statement.

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An element crystallizes in a face-centered cubic lattice. If the length of an edge of the unit cell is 0.408 nm, and the density
V125BC [204]

Answer:

Au

Explanation:

For the density of a face-centered cubic:

Density = \dfrac{4 \times M_w}{N_A \times a^3}

where

M_w = molar mass of the compound

N_A= avogadro's constant

a^3 = the volume of a unit cell

Given that:

Density (\rho) = 19.30 g/cm³

a = 0.408 nm

a = 0.408 \times 10^{-9} \times 10^{2} \ cm

a = 4.08 \times 10^ {-8} \ cm

∴

19.3 = \dfrac{4 \times M_w}{(6.023 \tmes 10^{23})\times (4.08 \times 10^{-8})^3}

M_w= \dfrac{19.3\times (6.023 \times 10^{23})\times (4.08 \times 10^{-8})^3}{4}

M_w=197.37 \ g/mol

Thus, the molar mass of 197.37 g/mol element is Gold (Au).

4 0
2 years ago
Definition of metallurgy
iragen [17]
<span>Definition of Metallurgy-The branch of science and technology concerned with the properties of metals and their production and purification.</span>
8 0
3 years ago
Read 2 more answers
Will give 20 points and brainliest help
Blababa [14]

the answer you have chosen is correct

8 0
2 years ago
I need help with this definitions!!!
abruzzese [7]
Rock cycle - a process in which a rock forms, changes from one type of rock to another, forms again by processes on and in the Earth.

Metamorphic Rock - Rocks changed by intense heat or extreme pressure.

Sedimentary Rock - A rock that forms when sediments are compacted and cemented together.

Igneous Rock - A rock that forms when molten rock cools and hardens.
3 0
2 years ago
5. Which pair of elements would combine to forin an ionic compound?
Natasha_Volkova [10]
C.silicon and oxygen is the answer
5 0
2 years ago
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