All categories

3 years ago

What were the first 25 elements that found in the earth? answer it plz.

Chemistry

1 answer:

ollegr [7]3 years ago

6 0

Answer:

Copper, Lead, Gold, Silver, Iron, Carbon, Tin, Sulfur, Mercury, Zinc, Arsenic, Bismuth, Phosphorus, Cobalt, Platinum, Nickel, Magnesium, Hydrogen, Oxygen, Nitrogen, Barium, Chlorine, Manganese, Molybdenum, Tungsten.

Explanation:

Hope This Helps :b

You might be interested in

Convert the following: 1. 60.0 mi/h.to ft/s 2. 15 Ib/in2 to kg/m? 3. 6.20 cm/hr2 to nm/s

Luda [366]

Answer:

1. $60.0 mi/h=88 feet/seconds$

2. $15 Ib/inch=267.86 kg/m$

3. $6.20 cm/hr=17,222.22 nm/s$

Explanation:

1. 60.0 mi/h to ft/s

1 mile = 5280 feet

1 hour = 3600 seconds

So, $60.0 mi/h=\frac{60\times 5280 feet}{1\times 3600 s}=88 feet/seconds$

2. 15 Ib/in to kg/m

1 lb = 0.453592 kg

1 inch = 0.0254 m

So, $15 Ib/inch=\frac{15\times 0.453592 kg}{1\times 0.0254 m}=267.86 kg/m$

3. 6.20 cm/hr to nm/s

1 cm = $10^7 nm$

1 hour = 3600 seconds

So, $6.20 cm/hr=\frac{6.20\times 10^7 nm}{1\times 3600 s}=17,222.22 nm/s$

6 0

3 years ago

The molar mass of CO2 is 44.01 g/mol. Which is the mass of 3.21×1025 molecules of CO2

sineoko [7]

Given:

Molar mass of CO2 = 44.01g/mol

3.21x10^25 molecules of CO2

Required:

Mass of CO2

Solution:

Avogadro’s number states that for every mole of atom, there are 6.023x10^23 units of atom. The units may be formula units, atoms. In here, you need to divide 3.21x10^25 molecules of CO2 to 6.023x10^23 molecules per mole.

3.21x10^25 molecules of CO2 / 6.023x10^23 molecules per mole = 53.30 moles CO2

53.30 moles CO2 (44.01g/mol CO2) = 2346 g of CO2

7 0

4 years ago

Match the SI unit to the quantity it measures. second gram kelvin mole ampere meter candela kilogram nanosecond mass arrowRight

Gemiola [76]

SI unit- Quantity

second- time

kilogram- mass

kelvin- temperature

ampere- electric current

S.I. Unit of time is second.

S.I. Unit of mass is kilogram.

S.I. Unit of temperature is kelvin.

S.I. Unit of electric current is ampere.

So match will be as follows:

second- time

kilogram- mass

kelvin- temperature

ampere- electric current

8 0

3 years ago

Scientifically is light the fastest thing in the world

ehidna [41]

~Hello there!

Your question: Scientifically is light the fastest thing in the world?

Your answer: Yes! Light is the fastest thing in the world!. Its even proved in the modern physics. Even if the light going through an empty space, its velocity will be constant and steady.

Any queries?

Happy Studying ^=^

7 0

3 years ago

How does concentration affect our daily lives in science?

statuscvo [17]

1. <em>Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period. </em>

<em>2. Physical state of the reactants and surface area.</em>

8 0

3 years ago

What were the first 25 elements that found in the earth? answer it plz. ​

What were the first 25 elements that found in the earth? answer it plz.