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
mamaluj [8]
3 years ago
5

Which group reacts with water to form hydrogen

Chemistry
2 answers:
cluponka [151]3 years ago
8 0
The answer is alkali metal groups i think
Paha777 [63]3 years ago
4 0

Answer: The answer is the alkali metals group! Hope this helps!

Explanation:

You might be interested in
Chemical equation for heat of formation of c25h52
Alexus [3.1K]
 its exothermic. exothermic means the reaction gives out heat. [exo meaning outside and thermic meaning heat] because its a combustion reaction, fire is there meaning lots of heat. 
endothermic means it takes in heat. a good example is ammonium and water (NH3 +H20) 
<span>most chemical reaction are exothermic</span>
8 0
3 years ago
LOS AMOOOO 1 AL 40 COMENTÉN​
OleMash [197]

Answer:

0 ni siquiera te conozco

Explanation:

6 0
3 years ago
A person driving a car applies the brakes. This produces friction, which stops the car. Into which type of energy is the mechani
antiseptic1488 [7]

Answer: D. Gravitational

Explanation:

3 0
3 years ago
explain how to determine the number of atoms, cations, and anions in ionic compounds. use an example to explain. ​
Damm [24]

Answer:

use coefficients and subscripts to determine how many atoms are in a compound. If there is no subscript or coefficient, assume it is 1. If there is a coefficient, multiply it with the subscripts. For counting cations and anions, determine first which is the anion and cation (anion = nonmetal, cation = metal), then count the number of that ion.

Example:

NaCl

one atom of Na, one atom of Cl. Since Na is a metal, it is a cation. Cl is a nonmetal, so it is an anion.

2CaCl2

2 atoms of Ca, 4 atoms of Cl. There are 2 cations, since Na is a metal, and 4 anions since Cl is a nonmetal

8 0
2 years ago
What mass of zinc (molar mass 65.4 g moll) does it take to produce 0.50 mole of H2(g)?
Hatshy [7]

Answer:

32.7 g of Zn

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

Zn + 2HCl —> ZnCl₂ + H₂

From the balanced equation above,

1 mole of Zn reacted to produce 1 mole of H₂

Next, we shall determine the number of mole of Zn required to produce 0.5 mole of H₂. This can be obtained as follow:

From the balanced equation above,

1 mole of Zn reacted to produce 1 mole of H₂.

Therefore, 0.5 mole of Zn will also react to produce to 0.5 mole of H₂.

Thus, 0.5 mole of Zn is required.

Finally, we shall determine the mass of 0.5 mole of Zn. This can be obtained as follow:

Mole of Zn = 0.5 mole

Molar mass of Zn = 65.4 g/mol

Mass of Zn =?

Mass = mole × molar mass

Mass of Zn = 0.5 × 65.4

Mass of Zn = 32.7 g

Thus, 32.7 g of Zn is required to produce 0.5 mole of H₂.

4 0
2 years ago
Other questions:
  • is the number of total atoms on the left side of a balanced equation always equal to the number of total atoms on the right side
    15·2 answers
  • According to the authors, the most effective means of developing _______________ are instrumental chemistry, microscopy, photoma
    7·1 answer
  • What is the cientific result for making marshmellows?
    15·1 answer
  • What mass of potassium hydroxide is formed when 8.2 g of potassium oxide is added to 1.3 g of water? answer key?
    13·1 answer
  • Type the correct answer in the box. Express your answer to three significant figures. A balloon is filled with 0.250 mole of air
    9·1 answer
  • A sample of gas has a volume of 5.58 l at a pressure of 715 mm hg. what is the volume of the gas when the pressure of the gas is
    7·1 answer
  • A teacher is demonstrating physical and chemical changes to her class. Which action should they use to demonstrate a chemical ch
    6·1 answer
  • Which of these solutes raises the boiling point of water the most?
    11·1 answer
  • A student wants to reclaim the iron from an 18.0 gram sample of iron (III) oxide, which occurs according to the reaction below:
    14·1 answer
  • A physical change is ...
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!