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3 years ago

It is likely that Si and P would substitute for each other in a solid solution.

Chemistry

2 answers:

ivanzaharov [21]3 years ago

4 0

Answer:

False

Explanation:

Rasek [7]3 years ago

3 0

Umm. False i guess I don’t really know

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What happens inside a closed car on a hot day? -APEX

lisabon 2012 [21]

The pressure inside the car increases.

7 0

3 years ago

Read 2 more answers

Nepheline a nonpartisan that survives at room temperature can be used to protect wool clothing from being eaten by moths.

serg [7]

Nephilim has very weak intermolecular forces
So on heating it directly turns gas from solid.

Nathaline is non polar
Water is polar

So it is not expected to dissolve in water.

Empirical formula mass

5(12)+4=60+4=64g

n:-

Molecular formula mass/Empirical formula mass
128/64
2

Molecular formula

n×Empirical formula
2(C_5H_4)
C_10H_8

8 0

2 years ago

A flask that weighs 450 g is filled with 145 ml of benzene. The weight of the flask and benzene is found to be 754 g. From this

vaieri [72.5K]

Answer:

Density, $d=2.09\ g/cm^3$

Explanation:

Given that,

Mass of a flask is 450 g

Volume of benzene added to the flask is 145 mL or 145 cm³

The weight of the flask and benzene is found to be 754 g.

We need to find the density of the benzene.

Weight of benzene added = total weight of flask and benzene-mass of flask

m = 754 g - 450 g

m = 304 g

Density = mass/volume

So,

$d=\dfrac{304\ g}{145\ cm^3}\\\\d=2.09\ g/cm^3$

So, the density of the benzene is $2.09\ g/cm^3$ .

7 0

3 years ago

When water vapor condenses, how much heat energy will be released into the atmosphere?

Leona [35]

When water vapor condenses, 2260 joules/gram heat energy will be released into the atmosphere.

To add, heat energy (or thermal energy or simply heat) is defined as a form of energy which transfers among particles in a substance (or system) by means of kinetic energy of those particles. In other words, under kinetic theory, the heat is transferred by particles bouncing into each other.

3 0

3 years ago

Consider a sample of 10.0 g of the gaseous hydrocarbon C2H6 to answer the following question: How many moles are present in this

Masja [62]

Answer: The moles of given hydrocarbon is 0.3 moles

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of ethane = 10.0 g

Molar mass of ethane = $[(2\times 12)+(6\times 1)]=30g/mol$

We need to divide the given value by the molar mass.

Putting values in above equation, we get:

$\text{Moles of ethane}=\frac{10.0g}{30g/mol}=0.3mol$

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 1.

Hence, the moles of given hydrocarbon is 0.3 moles

7 0

3 years ago