All categories

3 years ago

4. What are the freezing and boiling points of water on the Fahrenheit scale? On the

1 answer:

3 0

Water freezes at 0 degrees Celsius and 32 degrees Fahrenheit.
It boils at 100 degrees Celsius and 212 degrees Fahrenheit.

You might be interested in

Write the isotopic symbol for the following (show your work) a) An isotope of iodine whose atoms have 78 neutrons b) An isotope

morpeh [17]

Answer:

For a: The isotopic representation of iodine is $_{53}^{131}\textrm{I}$

For b: The isotopic representation of cesium is $_{55}^{137}\textrm{Cs}$

For c: The isotopic representation of strontium is $_{38}^{52}\textrm{Sr}$

Explanation:

The isotopic representation of an atom is: $_Z^A\textrm{X}$

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

For a:

We are given:

Number of neutrons = 78

Atomic number of iodine = 53 = Number of protons

Mass number = 53 + 78 = 131

Thus, the isotopic representation of iodine is $_{53}^{131}\textrm{I}$

For b:

We are given:

Number of neutrons = 82

Atomic number of cesium = 55 = Number of protons

Mass number = 55 + 82 = 137

Thus, the isotopic representation of cesium is $_{55}^{137}\textrm{Cs}$

For c:

We are given:

Number of neutrons = 52

Atomic number of strontium = 38 = Number of protons

Mass number = 38 + 52 = 90

Thus, the isotopic representation of strontium is $_{38}^{52}\textrm{Sr}$

3 0

3 years ago

Select a word from the drop-down menu to correctly complete the statement.

natka813 [3]

Answer: Fluorine and chlorine are gases. Bromine is one of only two liquid elements, and iodine is a solid.

6 0

3 years ago

Read 2 more answers

!PLEASE HELP! !URGENT! 25 POINTS

Varvara68 [4.7K]

B! because the hydrogen causes some nuclear reactions.

5 0

3 years ago

Read 2 more answers

Blank is how strong gravity pulls on an object

zheka24 [161]

It is either netforce or gforce

3 0

4 years ago

Is density physical or chemical

stepan [7]

Density is a physical

6 0

3 years ago