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Rudiy27
3 years ago
10

Express the density 5.6 g/cm3

Chemistry
1 answer:
Irina-Kira [14]3 years ago
5 0
I think it's 5,600kg/m^3
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Which of the following is NOT a homogeneous mixture? *<br> koolaid<br> soda<br> tea<br> water
Wittaler [7]

Answer:

water

Explanation:

Because it does not have more than one component.

4 0
3 years ago
If 100 g of a substance reacts with 70 g of another substance, what will be the mass of the products after the reaction?
RideAnS [48]

Answer:

x=170

The question is asking you to add them together to get your unknown number

7 0
3 years ago
Would you expect the Mg3[Cr(CN)6]2 to be diamagnetic or paramagnetic? Explain your reasoning.
bixtya [17]

Answer:

paramagnetic

Explanation:

The complex ion is : [Cr(CN)₆]³⁻

Oxidation state of Cr in [Cr(CN)₆]³⁻ is:

x + (-1)6 = -3

x = +3

CN⁻ is a strong field ligand which can result in  pairing of the electrons.

The electronic configuration of Cr is:

1s²2s²2p⁶3s²3p⁶3d⁵4s¹

The electronic configuration of Cr³⁺ is:

1s²2s²2p⁶3s²3p⁶3d³

<u>These 3 electrons will be singly present in the 3 degenerate t₂g orbitals and per Hund's rule, pairing will not occur in the same level energy orbitals. So , no. of unpaired electrons will be 3 and the complex will be paramagnetic.</u>

5 0
3 years ago
The gasses in a hair spray can are at temperature 300k and a pressure of 30 atm, it
Sergeeva-Olga [200]

Answer:

900 K

Explanation:

Recall the ideal gas law:

\displaystyle PV = nRT

Because only pressure and temperature is changing, we can rearrange the equation as follows:
\displaystyle \frac{P}{T} = \frac{nR}{V}

The right-hand side stays constant. Therefore:

\displaystyle \frac{P_1}{T_1} = \frac{P_2}{T_2}

The can explodes at a pressure of 90 atm. The current temperature and pressure is 300 K and 30 atm, respectively.

Substitute and solve for <em>T</em>₂:

\displaystyle \begin{aligned} \frac{(30\text{ atm})}{(300\text{ K})} & = \frac{(90\text{ atm})}{T_2} \\ \\ T_2 & = 900\text{ K}\end{aligned}

Hence, the temperature must be reach 900 K.

7 0
2 years ago
What volume (in mL) of a 0.113 M NaCl solution contains 0.087 mol NaCl?
Helen [10]
Hello I a m s o m o n e I n t h e w o r l d
5 0
3 years ago
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