Try try try please for me please

Chemistry

1 answer:

Inga [223]2 years ago

8 0

Answer:

a.) It is a chemical reaction because a new substance was formed and a colour change occurred in the reaction.

b.) Iron- Metallic element

sulpher- Non-Metalic element

Iron Sulphide- Compound

HOPE IT HELPS....

You might be interested in

What is the percent by mass of oxygen in al2o3 ?

Snezhnost [94]

mr oxygen= 16. 16 x 3= 48
mr Al2O3= 27 + 27 + 48= 102

(48/102) X 100%= 47.05% oxygen

4 0

3 years ago

In two or more complete sentences, explain how to balance the combustion equation: ___C5H12 + ___O2 ⟶ ___CO2 + ___H2O

egoroff_w [7]

Answer:

First, place no. 5 in front of the CO2 in order to balance the carbon atoms. Next, place no. 6 in front of H2O to balance the hydrogen atoms. Lastly place no. 8 in front of the O2 so that there are 16 oxygen atoms on both sides of the reaction.

7 0

2 years ago

Miss White wants to make a (decidedly not poisoned) apple pie. The recipe she is

Rina8888 [55]

So you have to multiply 786,3 times 0.98 to get the mass the mass is 770.57 if u round its 770.6 or 771

5 0

2 years ago

Definition of diameter?

astra-53 [7]

Answer:

a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Explanation:

a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

3 0

2 years ago

How many protons and neutrons are in the nucleus of isotope with mass of 68.926 amu?

Sidana [21]

There are 30 protons and 39 neutrons in the nucleus.

This must me the isotope of an element with an atomic mass close to 69 u.
The only candidates are Zn and Ga.
Zn has a zinc-69 isotope with mass 68.926 u.
Ga has a gallium -69 isotope with mass 68.925 u.
The isotope is probably $_{30} ^{69}Zn$ .
It has 30 protons and 39 neutrons.

4 0

2 years ago