All categories

3 years ago

Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. What is the mass in grams of 355 mL of ethylene glycol?

Chemistry

1 answer:

sesenic [268]3 years ago

7 0

Density=1.11g/mL
Volume=355mL

$\\ \bull\tt\leadsto Density=\dfrac{Mass}{Volume}$

$\\ \bull\tt\leadsto Mass=Density\times Volume$

$\\ \bull\leadsto Mass=1.11(355)$

$\\ \bull\leadsto Mass=394.05g$

You might be interested in

If we have any substance it can be concluded that a chemical change has happened if

Nadusha1986 [10]

Answer:

You cannot reverse the effects.

Explanation:

In physical changes you can usually reverse the effects for example if ice melts you can just refreeze it. But it's impossible to reverse a chemical change such as a rusted bike.

7 0

3 years ago

4. What is a clue that Earth is moving?

LUCKY_DIMON [66]

C. The Seasons change during the year.
Would be the correct answer.

6 0

3 years ago

Read 2 more answers

need help in getting a element superhero and the element i choose is Helium can you give me some ideas of a superhero to make us

slava [35]

You could design the hero with the powers of helium which then u can describe why u made the character with thoose powers

3 0

3 years ago

A cube has a depth of 10 cm. What is the volume of the cube? Or What is depth?

PolarNik [594]

depth = side/lenght

the cube has all congruent sides

Volume = l³

Volume = 10³

Volume = 1000 cm³

6 0

3 years ago

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Alik [6]

n = 3
l = 0
$m_l$ = 0

$m_s$ = 1/2 or -1/2

<h3>Explanation</h3>

There are four quantum numbers in an electron that orbits the atom.

n, the principal quantum number.
l, the angular quantum number.
$m_l$ , the magnetic quantum number.
$m_s$ , the spin quantum number.

n is a positive integer. The value of n indicates the main shell of the electron. The electron in question is in the 3s orbital. As a result, n = 3.

l is a non-negative integer. The value of l indicates the type of subshell ("orbital") of the electron. The types of subshells possible depends on the main shell. For example, both s and p orbitals exist in the second main shell. However, only the s orbital exists in the first main shell. The value of l ranges from 0 to n - 1.

l = 0 indicates an s orbital.
l = 1 indicates a p orbital.
l = 2 indicates a d orbital.
l = 3 indicates an f orbital.

The electron in question is in an s orbital. As a result, l = 0.

$m_l$ is an integer. The value of $m_l$ indicates the position of the electron within the subshell. The range of $m_l$ depends on the value of l. $m_l$ ranges from -l to l (that's -l, ..., -1, 0, 1, ... l). Accordingly, there are 2 l + 1 orbitals in a l subshell. l = 0 for this 3s electron. There's only one orbital in the 3s subshell. The only $m_l$ value possible for this electron is 0.

The value of $m_s$ is either - 1/2 or 1/2. It indicates the position of an electron within a single orbital. The value of $m_s$ does not depend on that of n, l, or $m_l$ . However, by the Pauli Exclusion Principle, at least one of the four numbers must differ for two electrons in the same atom. In case all three of n, l, and $m_l$ are the same, the two electrons must differ in $m_s$ . However, this question asks only for the number of one single electron. Thus, giving either - 1/2 or 1/2 shall work.

<h3>Reference</h3>

Vitz et. al, "5.8 Quantum Numbers (Electronic)", ChemPRIME (Moore et al.), Chemistry Libretexts. 27 Oct 2017.

7 0

4 years ago