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3 years ago

How many mL of 1.76 M sodium hydroxide solution (strong base) must be added to 0.75

1 answer:

5 0

Answer: Special care is required to prepare a solution of sodium hydroxide or NaOH in water because considerable heat is liberated by the exothermic reaction. The solution may splatter or boil. Here is how to make a sodium hydroxide solution safely, along with recipes for several common concentrations of NaOH solution.

Explanation:

Hope this helps!

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Will give brainlist need answers asap

Serga [27]

Answer:

40 g

Explanation:

Find the line labeled KClO3 (which might take you a min, theres a lot of lines here)

Notice that when the line creates a direct point, you can measure the exact temperature needed to dissolve a certain amount (like how they gave 30 degrees and it lined up perfectly with the 10 g line. )

Since its asking for the amount at 80 degrees, all you need to do is trace the line to the 80 degree point, and look at the grams. (notice it made a direct point, so there definitely should be any decimals or guesswork)

By reading the graph, you can tell that at 80 degrees, it dissolves 40 grams, and that is your answer.

Hope this helps :)

3 0

3 years ago

Which model of the atom is considered to be most accurate?

postnew [5]

The correct answer is B)wave mechanical. Hope that helps! If you have any questions about the answer i gave you please let me know!

7 0

3 years ago

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The energy transfer between the system and the surroundings, in the form of heat at constant pressure is described by which of t

kicyunya [14]

I think the answer would be d but not 100% sure

4 0

4 years ago

Indicate the direction of polarity of each of the following covalent bonds by dragging the appropriate delta notation to each en

Damm [24]

Answer:

Polarity is a property of molecules that represents the separation of electrical charges within the molecule, depending on the number and type of bonds it possesses.

The covalent bond between two atoms can be polar or apolar. This depends on the type of atoms that make it up: if the atoms are equal, the bond will be apolar (since no atom attracts electrons more strongly). But, if the atoms are different, the bond will be polarized towards the most electronegative atom, since it will be the one that attracts the electron pair with more force.

For each of the followings covalent bonds the direction of polarity is the one shown in the picture.

We see that in the C-O bond oxygen is more electronegative than carbon. Therefore, there will be a dipole vector oriented towards of the oxygen. We can represent this polarization of the bond by means of an arrow, which always points to the most electronegative atom.

Explanation:

The polarity of a chemical bond occurs when there is an asymmetric distribution of the electronic cloud of the bond around the two atoms that make up that link. This happens when both atoms have different electronegativity.

Each bond composed of different atoms generates a dipole vector, which points to the most electronegative atom.
A molecule will have as many vectors as it has covalent bonds.
If the vectors do not cancel out, then the molecule will be polar.

7 0

4 years ago

Where did the atoms come from in the first place?

Salsk061 [2.6K]

Answer:

All the carbon atoms in the human body were created in the stars. Elementary particles, such as protons, were formed during the "big bang"; that amazing moment about 14 billion years ago in which the universe got it's start.

4 0

3 years ago

Read 2 more answers