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Irina-Kira [14]
3 years ago
8

Predict which of the following metals reacts with hydrochloric acid.

Chemistry
1 answer:
VashaNatasha [74]3 years ago
6 0

Answer:

Pb, Cr, Fe

Explanation:

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A person driving a car applies the brakes. This produces friction, which stops the car. Into which type of energy is the mechani
antiseptic1488 [7]

Answer: D. Gravitational

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3 years ago
A student was asked to prepare 500.0 mL of 6.0 M NaOH. The student measured 120.0 g of NaOH and placed it in a 1000 mL beaker. T
Morgarella [4.7K]

Answer:

The concentration of the solution will be much lower than 6M

Explanation:

To prepare a solution of a solid, the appropriate mass is taken and accurately weighed in a weighing balance and then made up to mark with distilled water.

From

n= CV

n = number of moles m/M( m= mass of solid, M= molar mass of compound)

C= concentration of substance

V= volume of solution

m=120g

M= 40gmol-1

V=500ml

120/40= C×500/1000

C= 120/40× 1000/500

C=6M

This solution will not be exactly 6M if the student follows the procedure outlined in the question. The actual concentration will be much less than 6M.

This is because, solutions are prepared in a standard volumetric flask. Using a 1000ml beaker, the student must have added more water than the required 500ml thereby making the actual concentration of the solution less than the expected 6M.

7 0
3 years ago
Plant cells have large central ________________ . These are also found in animal cells but are much smaller Question 3 options:
Phantasy [73]

Answer:

vacuoles

Explanation:

Vacuoles are not only found in animal and plant cells, but on every given diagram vacuoles are huge and singular on a plant cell. Animals however, there are multiple and are much smaller

6 0
3 years ago
Which of the following is the last step in performing a titration
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The final step in a typical titration, that is here an acid base one would be to finally find the concentration of your unknown substance whether that be the acid or the base. The other steps are used before this to come to the correct calculation and conclusion.
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2 years ago
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The periodic table is organized so chemists can easily see ____________.
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Answer: It’s C

Explanation:

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3 years ago
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