1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
morpeh [17]
4 years ago
4

During a lab experiment, students are supposed to add small pieces of magnesium, aluminum, and calcium metal to concentrated hyd

rochloric acid in a test tube. the laboratory instructions include strong safety warnings to make sure that no sparks, open flames, or high heat sources are present in the room when students perform this experiment. which is the most likely reason for these warnings
Chemistry
2 answers:
erma4kov [3.2K]4 years ago
4 0

Hydrogen gas is highly flammable

alexandr1967 [171]4 years ago
3 0

Hydrogen gas is released when these 3 metals are reacted wit the acid. This gas is highly inflammable and will react violently with sparks , open flames and sources of high heat.

You might be interested in
Which of the following transition is considered the phase<br> change from water to steam?
Alexandra [31]

Answer:

the transition from water to steam is call evaporation.

Explanation:

water evaporates or vaporizes and turns into steam this typically happens when heat meets with the water. an example would be if you boil water steam will release from the pot, or when it rains, snows, etc (precipitation) the water evaporates and the ground dries.

4 0
3 years ago
Explain all ways your atom and symbol for it would change if you removed 2 electrons from the atom
MissTica

Each atom/element has an electron configuration

The electron configuration shows the energy level of the electron

Each electron configuration has 4 quantum numbers, namely n, l, ml, and ms

  • n = the principal
  • l = the angular momentum / azimuthal
  • ml = the magnetic
  • ms = the electron-spin

We make an example of the element Mg which is in group 2 with the atomic number 12

Electron configuration of Mg: [Ne] 3s² or 1s² 2s² 2p⁶ 3s²

if Mg removes 2 electrons then Mg will form a positive ion (cation) Mg²⁺

This cation is included in the monatomic ion because it is formed from one element (in contrast to the polyatomic ion, which is formed from two or more elements such as SO₄²⁻, ClO₃⁻)

Electron configuration of Mg²⁺ : 1s² 2s² 2p⁶

So atoms can be positively or negatively charged depending on removing or attracting electrons

6 0
4 years ago
Calculate the speed of a dog running through a field if he is covering 23.7 meters in 54 seconds.
Elenna [48]

Explanation:

speed = distance/time

= 23.7/54 m/s

= 0.44 m/s

speed of a dog running through a field = 0.44 m/s

4 0
3 years ago
Read 2 more answers
If a rock is thrown 0.8 meters into the air, How fast was it thrown
sergiy2304 [10]
V=0 m/s, u=?, a = 9.8 m/s² and s = 0.8 m
u²=2×9.8×0.8=15.68
<span>u=3.959 ≈ 3.96 m/s

</span>
3 0
3 years ago
Read 2 more answers
A lithium atom had 3 protons 3 neutrons and 3 electrons what is the overall charge on its atom
irga5000 [103]
Wait what supject is this chemistry? Unknown I'll help you after
8 0
3 years ago
Read 2 more answers
Other questions:
  • How do i calculate the mass of CO2 emitted per Kj of heat produced in a combustion reaction?
    15·1 answer
  • The correct name for molecule I is
    10·1 answer
  • I NEED HELPPPPPPPPPPPPPP PLZZZZZZZ
    6·1 answer
  • Q: what are the mass number and charge of an electron, respectively?
    14·1 answer
  • Which two compounds are classified as bases by the Brønsted-Lowry definition, but not by the Arrhenius definition, and why?
    15·1 answer
  • Which statement is NOT stated in the cell theory?
    5·1 answer
  • PLEASE HELPPPP!!!!!
    9·1 answer
  • Second time posting this, help asap, please :( Will give a brainliest!
    14·1 answer
  • which of the basic ideas of dalton's Atomic Theory is an extension of what the Greeks believed about atoms?
    5·1 answer
  • Which best describes how many
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!