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3 years ago

The particles in both gases and liquids select one:

1 answer:

6 0

A is the answer, it cant be B cause liquid cant change with ither particles. It cant be C cause gases dont vibrate they slide over each ither. It cant be D cause solid is the one closely packed together

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What was the result of the difference in temperatures within the early solar system as the planets formed?

miskamm [114]

Answer:the awenser is b

Explanation:

cause

6 0

2 years ago

A cubic object has a volume of 250 cm. What is its density if its mass is 5 points<br> 257.3 g?

ira [324]

Answer:

<h3>The answer is 1.03 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 257.3 g

volume = 250 cm³

We have

$density = \frac{257.3}{250} \\ = 1.0292$

We have the final answer as

Hope this helps you

8 0

3 years ago

Consider the reaction: 2BrF3(g) --> Br2(g) + 3F2(g)

riadik2000 [5.3K]

Answer : The entropy change of reaction for 1.62 moles of $BrF_3$ reacts at standard condition is 217.68 J/K

Explanation :

The given balanced reaction is,

$2BrF_3(g)\rightarrow Br_2(g)+3F_2(g)$

The expression used for entropy change of reaction $(\Delta S^o)$ is:

$\Delta S^o=S_f_{product}-S_f_{reactant}$

$\Delta S^o=[n_{Br_2}\times \Delta S_f^0_{(Br_2)}+n_{F_2}\times \Delta S_f^0_{(F_2)}]-[n_{BrF_3}\times \Delta S_f^0_{(BrF_3)}]$

where,

$\Delta S^o$ = entropy change of reaction = ?

n = number of moles

$\Delta S_f^0$ = standard entropy of formation

$\Delta S_f^0_{(Br_2)}$ = 245.463 J/mol.K

$\Delta S_f^0_{(F_2)}$ = 202.78 J/mol.K

$\Delta S_f^0_{(BrF_3)}$ = 292.53 J/mol.K

Now put all the given values in this expression, we get:

$\Delta S^o=[1mole\times (245.463J/K.mole)+3mole\times (202.78J/K.mole)}]-[2mole\times (292.53J/K.mole)]$

$\Delta S^o=268.74J/K$

Now we have to calculate the entropy change of reaction for 1.62 moles of $BrF_3$ reacts at standard condition.

From the reaction we conclude that,

As, 2 moles of $BrF_3$ has entropy change = 268.74 J/K

So, 1.62 moles of $BrF_3$ has entropy change = $\frac{1.62}{2}\times 268.74=217.68J/K$

Therefore, the entropy change of reaction for 1.62 moles of $BrF_3$ reacts at standard condition is 217.68 J/K

3 0

4 years ago

Which of the following structures surround cells?

8090 [49]

Cells are surrounded by #2 , Cell membrane and Cell wall thats what protects the cell

4 0

3 years ago

Q1. What are Ceres, Ida, and Gaspra?

m_a_m_a [10]

Asteroids

Q2 Comet

A comet is a body with nucleus,Coma and tail.

Q3 Meteoroids.

Q4 Meteoroids(Meteor)....

When they enter earth atmosphere at high speeds

Q5... The SUN

6 0

3 years ago