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timama [110]
3 years ago
6

Did the material obtained by the two groups look the same​

Chemistry
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer:

No the material obtained by the two groups don't look the same.

Explanation:

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Why can the same earthquake have 2 different ratings on the Richer scale and the moment magnitude scale?
Nikolay [14]
This is because some Richer scales are programed or made differently in the factory therefore effecting ones ability to scale an Earth Quake
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3 years ago
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Cylinder with a mass of 12g has a radius measuring 2cm and height of 6cm what is its density
lakkis [162]

Answer:

Given:

m = 12 g, the mass of the cylinder

r = 2 cm, the radius of the cylinder

h = 6 cm, the height of the cylinder.

Calculate the volume, V, of the cylinder.

V = πr²h

  =  π*(2 cm)²*(6 cm)

  = 75.398 cm³

By definition,

density = mass/volume.

Therefore,

density = m/V

            = (12 g)/(75.398 cm³)

            = 0.159 g/cm³

            = 0.16 g/cm³ (nearest hundredth)

Answer: 0.16 g/cm³

8 0
3 years ago
According to Avogadro's law, how will the number of molecules in 2 liters
dexar [7]

According to Avogadro's law, the two gases will have equal number of molecules.

<h3>Avogadro's law </h3>

From the question, we are to determine how the two gases would compare according to Avogadro's law

First, we will state the Avogadro's law

<em>Avogadro's law</em> states that "equal volume of all gases at the <u>same temperature and pressure</u> contain the same number of molecules"

Now, from the given information

We have 2 liters of hydrogen gas and 2 liters of oxygen gas at the <u>same temperature and pressure</u>

According to Avogadro's law, gases that are equal in volume and are at the same temperature and pressure will have equal number of molecules.

Hence, according to Avogadro's law, the two gases will have equal number of molecules.

Learn more on Avogadro's law here: brainly.com/question/26174006

5 0
2 years ago
The molar concentration (M) of a solution prepared by dissolving 0.2362g of Cr(NO3)3 in a 50-mL volumetric flask is 0.01985M, wh
Vinil7 [7]

Answer:

Here's what I get  

Explanation:

You want to dilute the original solution by a factor of 25 in two steps, so you could dilute it by a factor of 5 in the first step, then dilute the new solution by another factor of 5.

A. First dilution

Use a 10 mL pipet to transfer 10 mL of the original solution to a 50 mL volumetric flask. Make up to the mark with distilled water. Shake well to mix.

Use the dilution formula to calculate the new concentration.

\begin{array}{rcl}c_{1}V_{1} & = & c_{2}V_{2}\\0.01985 \times 10.00 & = & c_{2} \times 50.00\\0.1985 & = & 50.00 c_{2}\\\\c_{2}& = & \dfrac{0.1985}{50.00}\\\\& = & \text{0.003 970 mol/L}\\\end{array}

B. Second dilution

Repeat Step 1, using the 0.003 970 mol·L⁻¹ solution.

\begin{array}{rcl}c_{2}V_{2} & = & c_{3}V_{3}\\0.003970 \times 10.00 & = & c_{3} \times 50.00\\0.03970 & = & 50.00 c_{3}\\\\c_{3}& = & \dfrac{0.03970}{50.00}\\\\& = & \textbf{0.000 7940 mol/L}\\\end{array}\\\text{The concentration of the final solution is $\boxed{\textbf{0.000 7940 mol/L}}$}

3. Check:

Compare the final concentration with the original

\begin{array}{rcl}\dfrac{ c_{3}}{ c_{1}} & = & \dfrac{0.0007940}{0.01985}\\& = & \mathbf{\dfrac{1}{25.00}}\\\end{array}\\\text{The concentration of the final solution is } \boxed{\mathbf{\dfrac{1}{25}}} \text{ that of the original solution}

7 0
3 years ago
FOR 100 POINTS, IF INCORECT...
Lilit [14]

Answer:

#1

Heat transfer occurred in the room through radiation

This is where heat is transmitted through vacuum or an empty space from a point to another.

#2

From the furnace, the air molecules nearer the region gained higher kinetic energy hence colliding with other molecules in the room. This causes a positive temperature gradient which causes an increment change in temperature in the room.

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6 0
1 year ago
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