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Liono4ka [1.6K]
3 years ago
8

A sampling of 30 million particles coming from an exhaust vent contained 60 sulfur dioxide molecules. What is another way of exp

ressing this concentration of sulfur dioxide using this information?
Chemistry
1 answer:
Masteriza [31]3 years ago
4 0
I’m not sure on this one either
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What would you use to mesuasee the height of the tree
Zielflug [23.3K]

Answer:

if you mean "measure" you can use many things. from inches to meters. sometimes if they are big they are measured in "stories". but the smaller the unit is. the harder it is and longer it takes to measure it

7 0
3 years ago
What element has 80 protons, 81 neutrons, 79 electrons?
Mariana [72]

Answer:

The element will be ^{161}_{80}X

Explanation:

Given that,

Number of proton = 80

Number of neutron = 81

Number of electron = 79

We know that,

The atomic number is equal to the number of proton.

So, the atomic number is 80.

According to atomic number,

The element will be mercury.

We need to calculate the atomic mass

Using formula of atomic mass

atomic\ mass=atomic\ number+number\ of\ neutron

Put the value into the formula

atomic\ mass=80+81

atomic\ mass=161

We need to find the element

Using atomic mass and atomic number

atomic\ mass\ number A=161

atomic\ number Z=80

So, the element will be

^{A}_{Z}X

Put the value of A and Z

Hence, The element will be ^{161}_{80}X

5 0
3 years ago
What family of elements in the periodic table contains the most reactive metals?
jeka57 [31]
Alkali metals.

Elements found in group 1 of the periodic table.
4 0
2 years ago
Read 2 more answers
If earth is 1.50 x 10^8km from the sun what is the distance in Mm?
Readme [11.4K]

The distance of the earth to the sun in Mm = 1.5 x 10⁵

<h3>Further explanation</h3>

Given

The distance of the earth to the sun : 1.50 x 10⁸ km

Required

The distance in Mm

Solution

In converting units we must pay attention to the conversion factor.

the conversion factor :

1 kilometer(km) = 10⁻³ megameter(Mm)

So the distance conversion :

1.5 x 10⁸ x 10⁻³ = 1.5 x 10⁵ Mm

8 0
2 years ago
24 POINTS!!!!!!!!!!!!!!!!!!!!!!!!
jarptica [38.1K]
The correction answer is Alloy. If you look at the graph, and pay attention to the wording in the question, it says "using low force to move the ball." The best option for moving the ball with low force is Alloy. Hope this helps!
4 0
2 years ago
Read 2 more answers
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