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3 years ago

Is boron an element a compound a heterogeneous mixture or a homogeneous mixture?

1 answer:

3 0

The answer is heterogeneous mixture because the blood cells are physically separate from the blood plasma.

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Write Qc for each of the following:(1) Gaseous sulfur tetrafluoride reacts with liquid water to produce gaseous sulfur dioxide a

snow_tiger [21]

Answer : The expression for reaction quotient will be :

(1) $Q_c=\frac{[SO_2][HF]^4}{[SF_4]}$

(2) $Q_c=\frac{[O_2]^2[Xe]}{[XeF_2]}$

Explanation :

Reaction quotient $(Q_c)$ : It is defined as the measurement of the relative amounts of products and reactants present during a reaction at a particular time.

(1) The given balanced chemical reaction is,

$SF_4(g)+2H_2O(l)\rightarrow SO_2(g)+4HF(g)$

In this expression, only gaseous or aqueous states are includes and pure liquid or solid states are omitted. So, the expression for reaction quotient will be :

$Q_c=\frac{[SO_2][HF]^4}{[SF_4]}$

(2) The given balanced chemical reaction is,

$2MoO_2(s)+XeF_2(g)\rightarrow 2MoF(l)+Xe(g)+2O_2(g)[/texIn this expression, only gaseous or aqueous states are includes and pure liquid or solid states are omitted. So, the expression for reaction quotient will be :[tex]Q_c=\frac{[O_2]^2[Xe]}{[XeF_2]}$

7 0

3 years ago

Which description lists Earth's layers from most superficial to deepest?

Zanzabum

Lithosphere, asthenosfhere , lower mantle

8 0

3 years ago

Read 2 more answers

PLEASE HELP When I combine Sprite with a sour candy, it starts to bubble a lot. Is this a physical or chemical change?

maksim [4K]

Answer:

B. chemical

Explanation:

Chemical change cannot go back to its original form

4 0

2 years ago

Read 2 more answers

Which elemental clues contain sufficient info to place the element using no other info

zaharov [31]

Atomic number

Explanation:

The atomic number is enough clue that can be used to proper place elements without any other information. The atomic number is the number of protons in an atom. Protons are positively charged particles in the nucleus of an atom.

To place elements on the periodic table, the periodic law which states that "properties of elements are a periodic function of their atomic number" must be obeyed.
Using the atomic number, one can determine the number of electrons in a neutral atom, the charges on an ion e.t.c.
Atomic number can also be used to write the electronic configuration of an atom be it the shell notation, sublevel notation and the lewis dot structure.

Learn more:

Atomic numbers brainly.com/question/5425825

About atomic numbers brainly.com/question/1379579

Electronic configuration brainly.com/question/549647

#learnwithBrainly

8 0

3 years ago

When performing dimensional analysis, we usually use conversion factors. What is a conversion factor?

lora16 [44]

Answer:

A conversion factor is a variable that transforms the dimension of one variable into the terms of another variable.

Explanation:

Let be $x$ and $y$ two variables with diferent dimensions (units), $r$ is a conversion if transforms the dimension of one variable into the terms of the other variable. That is:

$y = r\cdot x$ (1)

Where:

$x$ - Input, [input unit]

$y$ - Output, [output unit]

$r$ - Conversion factor, [output unit] per [input unit]

4 0

3 years ago