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
Nadusha1986 [10]
2 years ago
15

Hydrofluoric acid (hf) is used to etch glass (sio2). the products of the reaction are silicon tetrafluoride and water. write the

balanced chemical equation.
Chemistry
2 answers:
Vlad [161]2 years ago
8 0

<u>Answer:</u> The balanced chemical equation is written below.

<u>Explanation:</u>

A balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on the product side. These equations follow law of conservation of mass.

When hydrofluoric acid reacts with glass or silicon dioxide, it leads to the production of silicon tetrafluoride and water.

The chemical equation for the reaction of two follows:

4HF+SiO_2\rightarrow SiF_4+2H_2O

By Stoichiometry of the reaction:

4 moles of hydrofluoric acid reacts with 1 mole of silicon dioxide to produce 1 mole of silicon tetrafluoride and 2 mole of water.

Hence, the balanced chemical equation is written above.

alexira [117]2 years ago
5 0
4HF + SiO₂ = SiF₄ + 2H₂O
You might be interested in
Describe how the size of the sun compares to the sizes of the other stars.
alina1380 [7]

Answer:

The sun's circumference is about 2,713,406 miles (4,366,813 km). It may be the biggest thing in this neighborhood, but the sun is just average compared to other stars. Betelgeuse, a red giant, is about 700 times bigger than the sun and about 14,000 times brighter.

Explanation:

looked it up

6 0
2 years ago
Read 2 more answers
Is LiOH soluble or insoluble?
riadik2000 [5.3K]
LiOH is soluble. Na2CO3 is soluble. Cu(OH)2 is insoluble. 
6 0
2 years ago
The first law of thermodynamics states that . How is this also a statement of the principle of conservation of energy?
Eddi Din [679]

The answer is a change in internal energy causes work to be done and heat to flow into the system.  

<u>Explanation:</u>

  • The first law of thermodynamics is a similar version of the law of conservation of energy where the energy can neither be created nor be destroyed, it can be transformed from one form to the other.
  • It also defines that the work is done and heat flowing into the system is due to the change in internal energy. The sum of all energy including kinetic and potential energy except the displaced energy to the surrounding is known as internal energy.
  • ΔU represents the change in internal energy of the system, Q represents the net heat transferred into the system, and W represents the net work done by the system. So +ve Q adds energy to the system and =ve W takes energy from the system. Thus ΔU=Q−W.

8 0
3 years ago
Read 2 more answers
Under what conditions of temperature and pressure is the behavior of real gases least like that of ideal gases
Rus_ich [418]
High temperature and low pressure<--Most likely

Low temperature and high pressure<----Less likely.

So the answer to this is Low temperature and high pressure. 
4 0
3 years ago
Read 2 more answers
3. Students measured the mass of the reactants and products for a combustion reaction they observed.
coldgirl [10]

Answer:

A. Students made a measurement error, because ending with more products is impossible.

Explanation:

The law of conversation of matter tells us that in a chemical reaction, matter is never created or destroyed, it's simply converted from one form to another. So the mass of reactants should always equal the mass of the products in a chemical reaction. If there is excess mass in the product, the students have made an error of some kind.

4 0
3 years ago
Other questions:
  • Why must the ph ammonia buffer solution be stored and dispensed in the fume exhaust hood?
    15·1 answer
  • element m is a metal and its chloride has the formula mcl2. to which group of the periodic table does m most likely belong
    7·2 answers
  • how many grams of ammonium sulfate can be produced if 60.0 mol of sulfuric acid react with an excess of ammonia?
    9·2 answers
  • At 3 atm pressure the volume of gas is 1200ml. What pressure is required to reduce the volume of the gas to 300ml if the tempera
    9·1 answer
  • Non-metals tend to
    13·1 answer
  • Why must humans find substitutes for many minerals found on Earth? (A) form at an extremely slow rate (B) controlled by other co
    5·1 answer
  • Elements in the same column of the periodic table share:
    8·1 answer
  • The molal boiling-point and freezing-point constants are different for different solvents.
    6·2 answers
  • Help on 2 and 3 due tomorrow pls help
    5·1 answer
  • What are the only elements that exist in nature as uncombined
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!