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
Black_prince [1.1K]
3 years ago
14

Calcium bicarbonate (Ca(HCO3)2) Ca:H:C:O = 1:2:2 ___ Lithium sulfide (Li:2s) Li:S = 2:__

Chemistry
1 answer:
Anastaziya [24]3 years ago
8 0

Answer: The ratio of atoms in calcium bicarbonate ; Ca : H : C : O = 1:2:2:6.

The ratio of atoms in lithium sulfide; Li : S = 2 : 1

Explanation:

In calcium bicarbonate:Ca(HCO_3)_2

In a molecular formula of calcium carbonate there are:

Number of Calcium atoms = 1

Number of Hydrogen atom = 1 × 2 = 2

Number of Carbon atoms = 1 × 2 = 2

Number of Oxygen atoms = 3 × 2 = 6

So, Ca : H : C : O = 1 : 2 : 2 : 6

In lithium sulfide :Li_2S

In a molecular formula of lithium sulfide there are:

Number of Lithium atoms =  1 × 2 = 2

Number of Sulfur atoms = 1

So, the Li : S = 2 : 1

You might be interested in
Mendeleev put elements in groups while creating the periodic table. What important role do groups play in the structure of the p
NikAS [45]

Answer:

Groups show similar chemical properties about the elements

Explanation:

The periodic table is divided into groups and periods. Groups are vertical while periods are horizontal.

All elements in the same group possess the same number of outermost shell electrons. This number of outermost shell electrons controls the reactivity of the elements in the group.

Hence, groups show similar chemical properties of the elements in them, Groups separate elements into families which assist in the speedy study of elements.

3 0
3 years ago
Please help-<br> thank you-
Flauer [41]
Dang that’s crazy.. Goodluck ..
4 0
3 years ago
Read 2 more answers
A solution of 1.50 g of solute dissolved in 25.0 mL of H₂O at 25°C has a boiling point of 100.45°C. (d) Find the van’t Hoff fact
givi [52]

The van 't Hoff factor is the ratio between the actual concentration of particles produced when the substance is dissolved and the concentration of a substance as calculated from its mass. For most non-electrolytes dissolved in water, the van 't Hoff factor is essentially 1.

<h3>What is the value of van 't Hoff factor?</h3>

For most non-electrolytes dissolved in water, the Van 't Hoff factor is essentially $ 1 $ . For most ionic compounds dissolved in water, the Van 't Hoff factor is equal to the number of discrete ions in a formula unit of the substance.

Which has highest Van t Hoff factor?

The Van't Hoff factor will be highest for

  A. Sodium chloride.

  B. Magnesium chloride.

  C. Sodium phosphate.

  D. Urea.

To learn more about van 't Hoff factor off factor here:

brainly.com/question/22047232

#SPJ4

4 0
2 years ago
The area surrounding the Pacific Ocean is often referred to as the ring of Firee due to the concentration of geologic events. De
viva [34]

Answer:

The amount of movement of tectonic plates in the area

Explanation:

The population density vary across the countries

Japan(127m), Philippines ( 103m), Indonesia (267m).

The volcanoes in Indonesia are among the most active of the pacific Ring of Fire along the north east island

5 0
3 years ago
The mass number of an atom is equal to which of the following?
Phantasy [73]
Mass number is equal to the number of protons plus the number of neutrons in a nucleus of an atom
4 0
3 years ago
Other questions:
  • A sample of ammonia has a mass of 82.9 g. how many molecules are in this sample?
    9·2 answers
  • Determine the mass of oxygen necessary to react with 2.3 moles of HCl
    8·1 answer
  • Which number should be placed in the blank to make the equation balanced? ___ Mg + P4 → 2 Mg3P2
    10·1 answer
  • Which of the following distinguishes an element from all other elements?
    9·1 answer
  • What is the correct name for the compound mn 3(po 4)2manganese (ii) phosphatemanganese phosphatemanganese (i) phosphate manganes
    14·1 answer
  • Which of these statements describes a chemical property?
    10·2 answers
  • -<br>-<br>The pressure for a tire is 123 KPa. Calculate the pressure in atmospheres (atm)?​
    5·1 answer
  • A hydrate of CoCl2 has a mass of 15.80 g before heating. After heating the mass of the anhydrous compound is found to be 9.32 g
    5·1 answer
  • Choose all the statements that are true for Relative Age Dating.
    7·1 answer
  • At 0 °C, some amount of energy is required to change 1 kg of water from a solid into a liquid. If you had a 2 kg piece of ice, w
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!