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3 years ago

What are the three steps scientists take to evaluate a scientific explanation

Chemistry

1 answer:

MrRissso [65]3 years ago

8 0

Hypothesis, experiment, conclusion<span />

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At stp which gas will diffuse more readily than ne

pav-90 [236]

I am assuming you are talking about Neon. The rate of diffusion is directly proportional to the molar mass of the gas. Since neon has a molar mass of 20.18 grams, the gas must have a lower molar mass and must be a gas at 273 Kelvin. There are several elements that fulfill this criteria: Hydrogen, Helium, Oxygen, Nitrogen, and Fluorine.

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3 years ago

Read 2 more answers

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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3 years ago

Imagine that Zapata was able to fly his machine far out into outer space. What do you predict would happen to Zapatas forward mo

scoray [572]

Answer:

B if they run out of fuel then they would probably keep going because there is nothing that would stop them other than like a planet or something.

Explanation:

5 0

3 years ago

The mass of a 6.0 mL sample of kerosene is 4.92. The density of kerosene is

weqwewe [10]

4.92 grams / 6 mL = .82 grams / mL

<span>(A) 0.82 g/mL</span>

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3 years ago

Calculate the average reaction rate of Cl2 consumed using the following information. H2 + Cl2 yields 2 HCl A table with three co

klemol [59]

Answer : Option D) 2.50 X $10^{-3}$ Mol/(L s)

Explanation: While calculating the average reaction rate for the given reaction in terms of Cl;

$H_{2} + Cl_{2} ----\ \textgreater \ 2HCl$ .

using the rate equation which is;

$\frac{-1}{1}$ $\frac{delta [Cl]}{delta t}$ =

$\frac{- 0.0875 - 0.0625}{10s - 0s}$ = 2.50 X $10^{-3}$ Mol/(L s)

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3 years ago