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
vaieri [72.5K]
3 years ago
10

Consider the unbalanced chemical equation hf + al -> alf3 + h2. when coefficients are added to balance the equation, which tw

o substances have a coefficient of two?
a. hf
b. alf3
c. h2
d. al
Chemistry
1 answer:
Mama L [17]3 years ago
5 0

Answer:

a

Explanation:

because you need to add 2 to to hf to make it equal to h2

You might be interested in
Syrup used for hummingbird feeders is commonly 25% sucrose (C12H22O11) by mass. if you wish to make 1.0 kg of this soltion, what
vlada-n [284]

Answer:

m

Explanation:

7 0
3 years ago
Which of the following are true about
andreev551 [17]
ALL sound waves are longitudinal, I know this of of many ways, I study astronomy and the sound waves of blackholes as they form. award me brainliest and I award you with a correct answer :)
3 0
3 years ago
Which element, when combined with Iodine, would most likely form an ionic compound?
uranmaximum [27]

In an ionic compound the atoms are linked via ionic bonds. These are formed by the transfer of electrons from one atom to the other. The atom that loses electrons gains a positive charge whereas the atom that accepts electrons gains a negative. This happens in accordance with the octet rule wherein each atom is surrounded by 8 electrons

In the given example:

The valence electron configuration of Iodine (I) = 5s²5p⁵

It needs only one electron to complete its octet.

In the given options:

K = 4s¹

C = 2s²2p²

Cl = 3s²3p⁵

P = 3s²3p³

Thus K can donate its valence electron to Iodine. As a result K, will gain a stable noble gas configuration of argon while iodine would gain an octet. This would also balance the charges as K⁺I⁻ creating a neutral molecule.

Ans: Potassium (K)

4 0
3 years ago
1.
guapka [62]

Answer:

what is this?    

Explanation:

6 0
3 years ago
I break and shatter easily and I am not shiny. What am I?
Troyanec [42]

Answer:

Uhh a heart? i.dk

7 0
2 years ago
Other questions:
  • In an oxygen element, each oxygen atom contains eight electrons in its valence shell. the atoms will be
    12·1 answer
  • The molar mass of I2 is 253.80 g/mol, and the molar mass of NI3 is 394.71 g/mol. How many moles of I2 will form 3.58 g of NI3?
    9·2 answers
  • 7.55 grams of P4 and 7.55 grams of O2 react according to the following reaction:
    15·1 answer
  • Can you guess my pfp
    11·1 answer
  • Which property of matter during a chemical change but does not change during a physical change
    10·1 answer
  • Name an element with electrons in the f subshell
    10·1 answer
  • Given the data in the table, what is the average atomic mass of chlorine?
    13·2 answers
  • The force generated by charged objects is called:
    8·2 answers
  • According to the kinetic theory of gas particles, when do gas particles have some type of force between them? a) when the volume
    10·1 answer
  • A sample of gas in a balloon has an initial temperature of 25 °C and a volume of 1.65x103 L. If the temperature changes to 77 °C
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!