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marysya [2.9K]
4 years ago
10

Which of the following is correct?

Chemistry
1 answer:
Katarina [22]4 years ago
5 0
B Through the ground (earthquakes)
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Which tool would a scientist use to measure reaction energy?
umka2103 [35]

Answer:

Calorimeter

Explanation:

Hi there ,

Your answer is calorimeter and it is a device for measuring the heat developed during a mechanical, electrical, or chemical reaction,

7 0
2 years ago
Read 2 more answers
Which shows the correct relationship between the molecular formula and the empirical formula for C2H10N2
vesna_86 [32]
The correct answer is molecular formula = 2 x empirical formula

The given compound C2H10N2 is the molecular formula because the ratios of the elements are not reduced into lowest terms (empirical formula). To get the empirical formula, the ratios must be reduced to the smallest possible integral ratio which gives CH5N. As a result, the ratio between both formulas is 2.
3 0
4 years ago
Find the volume of 0.240 m sulfuric acid necessary to react completely with 66.9 g sodium hydroxide.
nadya68 [22]

The volume of 0.240 m sulfuric acid necessary to react completely with 66.9 g sodium hydroxide is 6.<u>96 L</u>

Concentration is the abundance of a constituent divided by way of the overall volume of an aggregate. several sorts of mathematical descriptions may be outstanding: mass concentration, molar concentration, variety concentration, and extent awareness.

Calculation:-

Concentration  = 0.24 M

mass = 66.9 g

The molar mass of Sodium Hydroxide is = NaOH

                                                           =  40g

mole = mass/molar mass

         = 66.9/40

         =  1.67 mole

C = moles/volume

Volume = moles/ concentration

             = 1.67/0.24

             = 6.<u>96 L</u>

The concentration of a substance is the quantity of solute found in a given amount of solution. Concentrations are normally expressed in terms of molarity, defined because of the variety of moles of solute in 1 L of answer.

The Concentration of an answer is a measure of the quantity of solute that has been dissolved in a given amount of solvent or answer. A concentrated answer is one that has a rather huge quantity of dissolved solute.

Learn more about concentration here:-brainly.com/question/26255204

#SPJ1

7 0
1 year ago
A drink is made up mostly of water. A small amount of sweet powder is stirred in using a spoon. The power in this solution is th
Helen [10]
Well the solvent is the liquid in a solution so your answer would be Solute, D. That is the one that would represent the sugar crystals being evenly mixed into a solution.
6 0
3 years ago
Read 2 more answers
Indicate whether each of the following compounds will gave an acidic, basic or neutral solution when dissolved in water. Clear A
allsm [11]

Answer: ammonium bromide : acidic : The pH will be less than 7.

potassium cyanide : basic :The pH will be more than 7.

calcium nitrate: neutral : The pH will be approximately equal to 7.

calcium hypochlorite : basic :The pH will be more than 7.

Explanation:

pH is defined as the negative logarithm of hydrogen ion concentration. The scale ranges from 0 to 14.

When a solution is acidic, it will show a pH in the range of 0 - 6.9. When a solution is basic, it will show a pH in the range of 7.1 - 14. When a solution is neutral, it will show a pH of 7.

ammonium bromide : NH_4Br : acidic as it is formed from the combination of strong acid HBr and weak base NH_4OH

potassium cyanide :KCN:  basic, as it is formed from the combination of weak acid HCN and strong base KOH

calcium nitrate: Ca(NO_3)_2 : neutral, as it is formed from the combination of strong acid and strong base.

calcium hypochlorite :  Ca(ClO)_2 : basic, as it is formed from the combination of weak acid HOCl and strong base Ca(OH)_2

3 0
4 years ago
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