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2 years ago

Question 6: what do i fill in the blank space? what are the units?

Chemistry

2 answers:

Arte-miy333 [17]2 years ago

3 0

Answer:

I don't know chemistry

Explanation:

because this is the hardest subject in the world nobody can solve it so do yourself ok Beta

Misha Larkins [42]2 years ago

3 0

Answer: 1. 393 K

2. 81 °C

3. 348 K

4. 129 K

5. 311 °C

Explanation: To convert °C to Kelvin K = °C +273 . And for Kelvin to degree Celsius °C = K- 273.

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If a 0.320 mM solution of MnO41- has an absorbance of 0.480 at 525 nm in a 1.000 cm cell. What is the concentration of a MnO41-

larisa [96]

Answer:

Hence the concentration of a MnO41- solution that has absorbance of 0.490 in the same cell at that wavelength is 0.3266.

Explanation:

Now A = el, el=const

Then,

$A2 / A1 = C2/ C1\\\\0.49/ 0.48 = C2 / 0.32\\\\C2 = 0.3266$

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2 years ago

In humans, unattached earlobes are dominant over attached earlobes. Which could be the genotype for someone with attached earlob

matrenka [14]

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3 years ago

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What would happen if less calcium chloride reacted and more unknown carbonate reacted?

Anit [1.1K]

A white insoluble solid would appeaer

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3 years ago

Determine the bonding type for boron trihydride given the electronegativity on the Pauling scale for boron is 2.0 and for hydrog

Anika [276]

Answer: The bond between boron and hydrogen in boron trihydride is covalent bond.

Explanation:

The type of bonding between the atoms forming a compound is determined by using the electronegativity difference between the atoms. According to the pauling's electronegativity rule:

If $\Delta \chi=0$ , then the bond is non-polar.
If $\Delta \chi\leq 1.7$ , then the bond will be covalent.
If $\Delta \chi>1.7$ , then the bond will be ionic.

We are given:

Electronegativity for boron = 2.0

Electronegativity for hydrogen = 2.1

$\Delta \chi=\chi_{H}-\chi_{B}\\\\\Delta \chi=2.1-2.0=0.1$

As, $\Delta \chi$ is less than 1.7 and not equal to 0. Hence, the bond between boron and hydrogen is covalent bond.

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2 years ago

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Ede4ka [16]

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3 years ago