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
Vaselesa [24]
3 years ago
7

What’s the formula for magnesium

Chemistry
1 answer:
polet [3.4K]3 years ago
7 0

Answer:

You better read more, kiddo.

If Calcium is Ca, why not Mg for magnesium; they are right next to each other; read until you know to Iron, Fe. (It is Fe because it is very long known, and kept its Latin name).

Like Sodium and Mercury and Lead &

Potassium. Look them up, & it will help you remember. Natrium, Hydragyrum, Plumbium et Kalium.

Good Luck!

Explanation:

You might be interested in
Classify each molecule by whether its real bond angles are the same as or different than its model (ideal) bond angles. In other
blagie [28]

The question is incomplete; the complete question is: Classify each molecule by whether its real bond angles are the same as or different than its model (ideal) bond angles. In other words, do the bond angles change when you switch between Real and Model mode at the top of the page? Same (angles do not change) Different (angles change) Answer Bank | H2O | CO2, SO2, XeF2, BF3 CIF3, NH3, CH4, SF4, XeF4, BrF5, PCI5,SF6

Answer:

Compounds whose real bond angle are the same as ideal bond angle;

SF6, BF3, CH4, PCI5

Compounds whose real bond angles differ from ideal bond angles;

H2O, CO2, SO2, XeF2, CIF3, NH3, SF4, XeF4, BrF5

Explanation:

According to the valence shell electron pair repulsion theory (VSEPR), molecules adopt various shapes based on the number of electron pairs on the valence shell of the central atom of the molecule. The electron pairs usually orient themselves as far apart in space as possible leading to various observed bond angles.

The extent of repulsion of lone pairs is greater than that of bond pairs. Hence, the presence of lone pairs on the valence shell of the central atom in the molecule distorts the bond angles of molecules away from the ideal bond angles predicted on the basis of valence shell electron pair repulsion theory.

For instance, methane is a perfect tetrahedron having an ideal bond angle of 109°28'. Both methane and ammonia are based on a tetrahedron, however, the presence of a lone pair of electrons on nitrogen distorts the bond angle of ammonia to about 107°. The distortion of lone pairs in water is even more as the bond angles of water is about 104°.

5 0
3 years ago
Decomposition of hydrogen peroxide: 2H2O2 --> O2(g) + 2H2O(l) How many molecules of water are produced from the decomposition
Lubov Fominskaja [6]

Answer:

Explanation:

You have the equation. Now change the 3.4 g H2 to moles. moles = grams/molar mass

<em>3.4 g/2.016 = 1.686 moles.</em>

Now using the coefficients in the balanced equation, convert moles H2O2 to moles H2O.

1.686 moles H2 x (2 moles H2O/2 moles H2O2) = 1.686 x (2/2) = 1.686 x (1/1) = 1.686 moles H2O.

Now you know that 1 mole of water is composed of 6.022 x 10^23 molecules. So

1.686 moles H2O x (6.022 x 10^23 molecules H2O/1 mole H2O) = ?? molecules.

8 0
2 years ago
Carrie went with her mother to the rifle range to practice shooting. Firing the rifle created the force needed to send the bulle
nalin [4]
 every action of has an opposite and equal reaction so we know that the rifle moved back toward her shoulder because the bullet that was fired out of gun was moving at a very high speed.
4 0
2 years ago
Read 2 more answers
Find the mass of (1) potassium which contains the same number of atoms as 5g of zinc and (2) iron which contains the same number
charle [14.2K]
Convert grams to moles
moles to moles
moles to grams

A. 2.99g
b. 20.88g

sent a picture of the work. hope you see it

5 0
3 years ago
A gas absorbs 10J of heat and is simulataneously comptessed by a constant external pressure of 0.5atm from 4L to2L in volume.Wha
Ne4ueva [31]

Answer:

B. 111 J

Explanation:

The change in internal energy is the sum of the heat absorbed and the work done on the system:

ΔU = Q + W

At constant pressure, work is:

W = P ΔV

Given:

P = 0.5 atm = 50662.5 Pa

ΔV = 4 L − 2L = 2 L = 0.002 m³

Plugging in:

W = (50662.5 Pa) (0.002 m³)

W = 101.325 J

Therefore:

ΔU = 10 J + 101.325 J

ΔU = 111.325 J

Rounded to three significant figures, the change in internal energy is 111 J.

7 0
2 years ago
Other questions:
  • Why is the molar solubility of silver chloride lower in an aqueous solution of silver nitrate than in pure water?
    9·1 answer
  • Which chemical reaction falls under the study of electrochemistry?
    5·2 answers
  • 14 POINTS
    10·2 answers
  • How many moles are in 100 grams of NaCl
    12·2 answers
  • Draw the best lewis structure for the free radical, no2. what is the formal charge on the n?
    8·2 answers
  • 1 Point
    10·1 answer
  • When a 235 92U 92235U nucleus is bombarded by neutrons (10n01n) it undergoes a fission reaction, resulting in the formation of t
    13·1 answer
  • Please help I will mark as brainliest........
    15·2 answers
  • How is wind used to produce electrical energy?
    15·1 answer
  • What can you conclude about the relationship between height and energy?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!