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
KiRa [710]
3 years ago
5

Balance the following equation. What is the coefficient for hydrogen fluoride?

Chemistry
1 answer:
NeTakaya3 years ago
5 0

Answer:

ans .4

Explanation:

SiO2 +HF ⇒ SiF4 +H2O

reactant side                          product side

Si = 1                                    Si = 1      its balanced

O = 2                    O = 1    (× WITH 2 ) we got O =2 And H = 4

H = 1                                     H = 2  NOW H =4

F= 1   (×4)                                   F   = 4

now we get SiO2 +4 HF ⇒SiF4 +2 H2O

After multiply with number again check it. Si = 1, O = 2 ,H=4 ,F=4

You might be interested in
A substance with a poH of 2 is a:
IRINA_888 [86]
The best answer choice is c
7 0
4 years ago
Calculate the molecular mass of the element
Elanso [62]

Answer:

Cu3 (PO4)2

3×64 + 2×(31+ 4×16)

192 + 2×(31+64)

192 + 2×(95)

192+190

=382g

4 0
2 years ago
Please follow me<br><br><br>What is science ?​
bonufazy [111]
<h2>Explanation:</h2><h3>the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment. </h3>

<h3>"the world of science and technology"</h3><h3>Similar:</h3><h3>branch of knowledge</h3><h3>area of study</h3><h3>discipline</h3><h3>field</h3><h3>a particular area of science.</h3><h3>plural noun: sciences</h3><h3>"veterinary science"</h3><h3>a systematically organized body of knowledge on a particular subject.</h3><h3>"the science of criminology" </h3>

<h3>Translations and more definitions</h3><h3>Learn new words</h3><h3>Which word is similar to science?</h3><h3>Discipline</h3><h3>or</h3><h3>Discussion</h3><h3>Question 1 of 5</h3><h3>Feedback</h3>

<h3>Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. ... In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws. </h3>

6 0
3 years ago
According to Newton’s Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because -
Andrej [43]

Answer:

for the force that sent the person forward, there is an equal force pushing back on the skateboard

5 0
4 years ago
How many molecules are in 20.2 moles of CO₂?
mrs_skeptik [129]

Answer:

1.22 x 10²⁵ molecules CO₂

Explanation:

To find the amount of molecules, you need to multiply the number of moles by Avogadro's Number. Avogadro's Number is a ratio which represents the amount of molecules per every 1 mole. It is important to arrange this ratio in a way that allows for the cancellation of units (since you are going from moles to molecules, moles should be in the denominator). The final answer should have 3 sig figs like the given value.

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

 20.2 moles CO₂           6.022 x 10²³ molecules
---------------------------  x  --------------------------------------  = 1.22 x 10²⁵ molecules
                                                     1 mole

8 0
1 year ago
Other questions:
  • How many moles of each element are in one mole of Sr(HCO3)2?
    9·2 answers
  • How many atoms are in 10g of Al
    10·1 answer
  • Choose the best answer that completes the sentence. A complex ion contains _________________. Group of answer choices a central
    6·2 answers
  • Why experiment boiling point different from theoritical value
    15·1 answer
  • Some nonliving things that is found in earths environment use an example of how you use each thing
    9·1 answer
  • HURRY<br> What is the volume of a cube with an edge length of 0.843
    13·2 answers
  • Isotopes of the same element have different numbers of
    9·1 answer
  • if a solid dissolves into a liquid, what does it mean about the properties of its molecules? Describe what it would look like on
    7·1 answer
  • Can you Explain the process of how clouds form?????
    11·1 answer
  • Rank the following salts in order of decreasing pH of their 0.1 M aqueous solutions:FeCl₂ , FeCl₃ , MgCl₂ , KClO₂
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!