3 years ago

Which is considered a fruit? acorn squash orange beet carrot

Chemistry

2 answers:

alekssr [168]3 years ago

6 0

Orange and maybe acorn

pychu [463]3 years ago

4 0

Answer:

an orange would be considered a fruit

Explanation:

fruits have seeds while vegetables do not

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Identify the following changes as physical or chemical. A loaf of risen but unbaked bread. Photo by Elinor D Bread dough rising:

sergey [27]

The answers include:

A loaf of risen but unbaked bread - chemical change.
Photo by Elinor D - chemical change.
Bread dough rising - chemical change.

<h3>What is a Chemical change?</h3>

This involves the formation of a new products from substances. In this scenario, a rising bread contains alcohol which evaporates.

Photographs also fall under this category and is therefore an irreversible chemical change.

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what are the lines called that show land elevations on a contour map? A. convergent lines. B. contour lines. C. elevation lines.

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3 years ago

How many liters of blood does the average living adult have

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4 years ago

Why does burning coal produce more heat energy than burning paper

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4 years ago

A sample of oxygen gas (O2) has a volume of 7.51 L at a temperature of 19°C and a pressure of 1.38 atm. Calculate the moles of O

Maslowich

Answer: 0.43molO₂

Explanation:

The ideal gas law for moles is $n=\frac{PV}{RT}$ . If you did not know, R is the ideal gas constant, $0.0821\frac{L*atm}{mol*K}$ .

Since the temperature must be in Kelvin, we must convert our given temperature from ℃ to K. $19C+273=292K$

Now that we have the temperature converted to Kelvin, we can plug in our information to the ideal gas law for the number of moles.

$n=\frac{PV}{RT}$

$n=\frac{1.38atm*7.51L}{0.0821\frac{L*atm}{mol*K} *292K} =0.43molO_{2}$

$n=0.43molO_{2}$

Therefore, the number of moles is 0.43molO₂.

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2 years ago