Why should hypothesis be testable?

Answers

Answer 1

Answer:

Answer:

D. It must be testable in order to be found true or false.

APEX

Answer 2

Answer: When a hypothesis is testable, it means that it's possible to see whether the prediction is true or not. Testing a hypothesis can include conducting experiments, collecting data and making observations.

Related Questions

For the reaction ?H2 +?O2 → ?H2O, what is the maximum amount of H2O (18.0153 g/mol) which could be formed from 9.43 g of H2 (2.01588 g/mol) and 12.98 g of O2 (31.9988 g/mol)? Answer in units of g.
Find the grams of iron in 79.2 g of Fe2O3.
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Crystalline solids do not have a sharp melting point.

TRUE

FALSE

Answers

Answer:

False

Explanation:

A crystalline solid has a well ordered structure. The particles that make up the solid are arranged in a regular repeating pattern. When the solid is heated, this structure gives way, in order words, the solid melts.

Pure solids crystals are known to have sharp melting points. This is a property of crystalline solids.

The statement about “Crystalline solids do not have a sharp melting point” is false. Crystalline solids are solids that have particles arranged in a regular, repeating patterns. They are held together by uniform intermolecular forces. The faces intersect at a specific angle that identifies that substance. They have distinctive internal structures that in turn lead to distinctive flat surfaces. These flat surfaces give a short rage order. When exposed to x – ray diffractometers, they exhibit a distinctive pattern used to identify the material. They give the same face when you turn a crystalline solid around

How many grams of oxygen are in 3.00 mol of NaNO3?

Answers

Molar mass of NaNO3 = 84.99 g/mol

1 mol NaNO₃ --------- 84.99 g
3.00 mol NaNO₃ ----- ?

Mass = 3.00 * 84.99 / 1

= 254.97 g of NaNO₃

26 A substance that dissolves in water and produces hydronium ions as the only positive ions in the solution is classified as(1) an alcohol (3) a base
(2) an acid (4) a salt

Answers

Answer : The correct option is, (2) an acid

Explanation:

As we know that when a substance (acid) that dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.

For example :

When $CH_3COOH$ (acid) dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.

The balanced reaction will be,

$CH_3COOH+H_2O\rightarrow H_3O^++CH_3COO^-$

Therefore, the substance is, (2) an acid

(2) an acid
It's caused by an Arrhenius acid mixing with water to form Hydronium and Hydroxide ions

What is electron configuration of sulfer?

Answers

Sulfur has 16 protons and 16 electrons.
The electronic configuration of Sulfur is:
2, 8, 6 = 16

Which of the following statements are correct about the chemical reaction?H2 + O2 -> H2O2
versus
2 H2 + O2 -> 2 H2O?
They are both balanced chemical equations.
The two reactions are equivalent.
The laws of thermodynamics apply to both.
Conservation of mass applies to both.

Answers

The correct answer for the question that is being presented above is this one: "They are both balanced chemical equations." The statement that is correct about the chemical reaction is that both chemical reaction are balanced chemical equations.

What is the concentration of a solution that has a volume of 2.5L and contains exactly 2.125 moles of calcium phosphate

Answers

Answer:

0.85 mol/L.

Explanation:

Molarity is defined as the no. of moles of solute dissolved in a liter of the solution.

M = (no. of moles of solute)/(Volume of the solution (L))

no. of moles of calcium phosphate = 2.125 mol.

Volume of the solution = 2.5 L.

∴ M of calcium phosphate = (2.125 mol)/(2.5 L) = 0.85 mol/L.

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