3 years ago

How many are the natural occurring elements?

Chemistry

1 answer:

sergejj [24]3 years ago

6 0

there are 92 naturally occuring elements

You might be interested in

cytoplasm streams within a cell, moving materials somewhat as ocean currents move a raft . in which cell will materials move fas

Scorpion4ik [409]

Because cytoplasm is made of a jelly like consistent

7 0

3 years ago

PLEASE HELP A HOMIIE

Allushta [10]

Answer:

Its the first one. The cells are arranged for structure.

Explanation:

Animal cells do not need to maintain a shape since out bodies do it for us. Plant cells need something for structure.

8 0

3 years ago

How many molecules (not moles of nh3 are produced from 5.01×10?4 g of h2?

Irina-Kira [14]

2,02g ------- 6,02×10²³
5,01×10⁴g --- x

$x=\frac{5,01*10^{4}g*6,02*10^{23}}{2,02g}=14,93*10^{27}$

N₂ + 3H₂ ⇒ 2NH₃
1mol : 3mol : 2mol
18,06×10²³ : 12,04×10²³
14,93×10²⁷ : y

$y=\frac{14,93*10^{27}*12,04*10^{23}}{18,06*10^{23}}\approx9,95*10^{27}$

5 0

2 years ago

Explain how you would test the presence of oxygen and hydrogen gases.

Vedmedyk [2.9K]

Place a burning splint near the opening of a test tube. If a popping noise occurs, it's probably hydrogen. Place a glowing splint in the test tube, and if it reignites, it could be oxygen. Place a burning splint into a test tube, and if it goes out, it could be carbon dioxide.

5 0

2 years ago

20 POINTSSS PLS HELP! Which of the following things threaten our fresh water supply? Check all that apply.

joja [24]

Fertilizer use the run on can go into fresh water

3 0

3 years ago

Read 2 more answers