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Serhud [2]
3 years ago
12

Which step in an investigation involves predicting the results?

Chemistry
1 answer:
Firdavs [7]3 years ago
5 0

Forming a hypothesis

Explanation:

The step in an investigation which involves the prediction of results is the stage of forming of a hypothesis.

  • A hypothesis is a stage in scientific investigation that follows shortly after asking a simple scientific question.
  • Hypothesis is simply a scientific guess that is logical in nature.
  • It presents a problem in a manner in which the problem is stated, the cause and the likely outcome can be predicted.
  • After a hypothesis formulation, the experiment is conducted and results of findings weighed against the predictions of the statement.

learn more:

Hypothesis brainly.com/question/3418951

#learnwithBrainly

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If you have 1.29 moles of NaCl in 4 liters of solution, what is the molarity of the solution?
Illusion [34]

Answer:

0.32M

Explanation:

Given parameters:

Number of moles of NaCl  = 1.29moles

Volume of solution = 4liters  = 4dm³

Unknown:

Molarity of solution = ?

Solution:

Molarity is one the ways of expressing the concentration of a solute in a solution. It is given as;

         Molarity  = \frac{number of moles }{volume}

The unit is given as M which is mol/dm³

    Input the parameters and solve;

           Molarity  = \frac{1.29}{4}    = 0.32mol/dm³ or 0.32M

7 0
3 years ago
Try moving an electron from the metal to the nonmetal. What happens?
skad [1K]

Answer:

Explanation:

When electron is transfer from metal to non metal anion and cations are formed and compound formed is called ionic compound.

Ionic bond:

It is the bond which is formed by the transfer of electron from metal to the atom of non metal.

Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity thus the atom which accept the electron is form anion and metal atom which lose the electron is form cation .

For example:

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion the compound form is called sodium chloride.

3 0
3 years ago
Breathing equipment used by rescue workers needs to capture the CO2 the humans breath out and produce O2 for them to breath in,
const2013 [10]

Answer: 4KO_2+2CO_2\rightarrow 2K_2CO_3+3O_2

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical equation for reaction of potassium superoxide  with carbon dioxide to produce oxygen and potassium carbonate will be:

4KO_2+2CO_2\rightarrow 2K_2CO_3+3O_2

8 0
3 years ago
What is the mass of 22.4 L of H2 at STP? (5 points)
cestrela7 [59]
11.2
Step-by-step-explanation
3 0
3 years ago
Read 2 more answers
What type of cells are gametes?
ELEN [110]

Answer:

Reproductive cells(also known as sex cells) are gametes.

Explanation:

Have a great day :)

6 0
3 years ago
Read 2 more answers
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