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Roman55 [17]
3 years ago
8

Please help me as soon as possible! Please help me as soon as possible!

Chemistry
1 answer:
Nastasia [14]3 years ago
6 0

The Answer is D. Suspending a heavy weight with a strong chain.

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Identify each of the following as a representative element or a transition element:
charle [14.2K]
The correct answer is B. Platinum is the transition element among the choices. The elements belonging to this group are those having a partially filled d or f subshell. It usually refers to the d-block transition elements of the periodic table.
3 0
3 years ago
What is the<br> mass of 1.82<br> moles of<br> Lithium<br> carbonate?
frutty [35]

Answer:

244.76

Explanation:

The weight of grams by 1.82 moles of lithium carbonate would be: 134.481438 So we need to use this equation to find mass by grams m × g = ms Where m is for moles, g for grams, and ms for mass. So now we need use this equation: 1.82 × 134.481438 = ? 1.82 × 134.481438 = 244.75621716 244.75621716, rounded-up (to the nearest-tenths place) is 244.76. So now you have it! The mass of 1.82 moles of lithium carbonate is 244.76!  

7 0
3 years ago
For the Bradford assay, the instructor will make a Bradford reagent dye by mixing 50 ml of 95% v/v ethanol with 100 mg of Coomas
Flauer [41]

Answer:

4.25% is the final concentration of phosphoric acid.

Explanation:

Initial concentration of phosphoric acid = C_1=85\%=0.85

Initial volume of phosphoric acid = V_1=50 mL

Final concentration of phosphoric acid = C_2=?

Final volume of phosphoric acid = V_2=1 L=1000 mL

( 1L = 1000 mL)

C_1V_1=C_2V_2

C_2=\frac{C_1times V_1}{V_2}

=\frac{0.85\times 50 mL}{1000 mL}=0.0425=4.25%

4.25% is the final concentration of phosphoric acid.

4 0
2 years ago
What happens when potassium reacts with fluorine to produce potassium fluoride
ElenaW [278]

Answer:

In order to obtain eight valence electrons (an octet), the potassium atom will transfer its single valence electron to the fluorine atom.

3 0
2 years ago
Help i really don’t understand
sattari [20]
1. 1mL
2. 2mL
3. 0.2mL
4. 0.5mL
7 0
2 years ago
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