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
dolphi86 [110]
3 years ago
10

All group I metals react with H2O to a form a metal hydroxide and hydrogen gas. Which of these will react the fastest? A) Li B)

Na C) K D) Cs
plzz help
Chemistry
2 answers:
kifflom [539]3 years ago
8 0

Cesium is the most reactive

kompoz [17]3 years ago
8 0
What group 1 metal reacts the fastest with H2O to form a metal hydroxide and hydrogen gas? Group 1 elements are lithium, sodium, potassium, rubidium and cesium ( or caesium ). The further down the table, the more reactive they are towards water.
You might be interested in
If someone is building a scale model of our solar system which characteristic would be the most difficult to build into the mode
nikitadnepr [17]

Answer:

The composition of the objects because not all the planets have been explored

5 0
3 years ago
For the following reaction, 22.9 grams of nitrogen monoxide are allowed to react with 5.80 grams of hydrogen gas. nitrogen monox
ololo11 [35]

Answer:

1) Maximun ammount of nitrogen gas: m_{N2}=10.682 g N_2

2) Limiting reagent: NO

3) Ammount of excess reagent: m_{N2}=4.274 g

Explanation:

<u>The reaction </u>

2 NO (g) + 2 H_2 (g) \longrightarrow N_2 (g) + 2 H_2O (g)

Moles of nitrogen monoxide

Molecular weight: M_{NO}=30 g/mol

n_{NO}=\frac{m_{NO}}{M_{NO}}

n_{NO}=\frac{22.9 g}{30 g/mol}=0.763 mol

Moles of hydrogen

Molecular weight: M_{H2}=2 g/mol

n_{H2}=\frac{m_{H2}}{M_{H2}}

n_{H2}=\frac{.5.8 g}{2 g/mol}=2.9 mol

Mol rate of H2 and NO is 1:1 => hydrogen gas is in excess

1) <u>Maximun ammount of nitrogen gas</u> => when all NO reacted

m_{N2}=0.763 mol NO* \frac{1 mol N_2}{2 mol NO}*\frac{28 g N_2}{mol N_2}

m_{N2}=10.682 g N_2

2) <u>Limiting reagent</u>: NO

3) <u>Ammount of excess reagent</u>:

m_{N2}=(2.9 mol - 0.763 mol NO* \frac{1 mol H_2}{1 mol NO})*\frac{2 g H_2}{mol H_2}

m_{N2}=4.274 g

8 0
3 years ago
Why do a planets speed change in orbit
gayaneshka [121]

According to Kepler's  second law of orbital motion, a plane's orbital speed changes , depending on how far it is from the sun. The closer a planet is to the sun, the stronger the sun's gravitational pull on it, and the faster the planet moves.  The farther away from the sun, the weaker the sun's gravitational pull and the slower it moves in its orbit.

The orbit of a planet around the sun is not  a perfect circle, but  an ellipse - a flattened circle.


3 0
3 years ago
What evidence supports a conservation law?
True [87]

Answer:

The answer is B.

Explanation:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

3 0
3 years ago
SOMEONE HELP PLEASE !!
aev [14]

salt is not because it gets u dehydrated

6 0
3 years ago
Other questions:
  • After spraying water on a waxed surface, a student notices that the water beads up to form many individual drops rather than bei
    5·1 answer
  • If one parent is TT (tall), and the other parent is tt (short). What percentage of the offspring will be short
    15·1 answer
  • How do you calculate the abundance of an atom and the relative atomic maths? As simply as possible?
    7·1 answer
  • A hydrate of copper (II) chloride has the following formula: CuCl2 - x H2O. The water in a 3.41-g sample of the hydrate was driv
    5·1 answer
  • Why are the offspring produced by sexual reproduction different than their parents?
    10·1 answer
  • When a gun is recovered from a crime scene never touch the blank with hands or any other object so you don't accidentally discha
    5·2 answers
  • A trait that is helpful to a species will become more common in that
    13·1 answer
  • I need a chemistry questions about separating method
    10·1 answer
  • A container holds a mixture of 3.01 x 1023 molecules of H₂ gas. 1.20 x 1024 molecules of CO₂ gas, and 1.50 x 10
    11·1 answer
  • A 40.3 ml sample of a 0.587 m aqueous hydrocyanic acid solution is titrated with a 0.363 m aqueous sodium hydroxide solution. wh
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!