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SOVA2 [1]
3 years ago
9

What does testable mean

Chemistry
2 answers:
Andrej [43]3 years ago
8 0

Answer:

Testability refers to the ability to run an experiment to test a hypothesis or theory. When designing a research hypothesis, the questions being asked by the researcher must be testable or the study becomes impossible to provide an answer to the inquiry.

Explanation:

Pls mark me as brainliest.

Dima020 [189]3 years ago
3 0

Answer:

what does testable mean

Explanation:

có thể kiểm tra nghĩa là gì

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What is the name of the ionic compound wwith the formula k(2)s?
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which of these stars is least likely to be categorized as a supergiant? A. Betelgeuse B. Pollux C. Sirius A D. Sun Reset Submit
Vesna [10]

Answer: The correct answer is option D.

Explanation: Super-giant stars are the stars which are greater than Sun. They have a mass hundred time greater than Sun and can be thousand times greater than Sun.

The masses of the stars are represented in Solar masses which is the mass of the Sun.

Mass of Betelgeuse = 20 Solar masses

Mass of Pollux = 1.7 Solar masses

Mass of Sirius = 2.02 Solar masses

Mass of Sun = 1 Solar mass.

As, the mass of Sun is the least from the given stars. Hence, it is least considered as a super-giant.

5 0
3 years ago
Consider the following system at equilibrium. CaCO3(s) Double headed arrow. Ca2 (aq) CO32â€""(aq) The addition of which compound
Dominik [7]

The compound that has been capable to shift the equilibrium with common ion effect has been  \rm \bold{Na_2CO_3}.  Thus, option D is correct.

The complete equation for the decomposition of calcium carbonate has been:

\rm CaCO_3\rightleftharpoons Ca^2^+\;+\;CO_3^2^-

The equilibrium has been the state in the reaction, when the number of products and has been equivalent to the number of reactants. The increase or decrease in the concentration of any of the reactant or product results in the shift in the equilibrium.

For the given reaction, the addition of Calcium or carbonate ions to the solution results in the increase in the product concentration with the common ion effect, and thereby shifts the equilibrium condition.

The ions liberated by the following compounds has been:

\rm CCl_4\;=\text{not dissolved}\\CO_2\;+\;H_2O\leftrightharpoons CO_3^-\;+\;H^+\\CuSO_4\leftrightharpoons Cu^2^+\;+\;SO_4^2^-\\Na_2CO_3\leftrightharpoons 2\;Na^+\;+\;CO_3^-

The compound, that has been capable of liberating the carbonate ions in the medium has been \rm \bold{Na_2CO_3}. Thus, it results in the shift of the equilibrium due to common ion effect. Hence, option D is correct.

For more information about common ion effect, refer to the link:

brainly.com/question/4090548

6 0
2 years ago
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