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
Vika [28.1K]
3 years ago
9

Which group on the Periodic Table of the Elements contains elements that react with oxygen to form compounds with the general fo

rmula X2O?
(1) Group 1 (3) Group 14
(2) Group 2 (4) Group 18
Chemistry
1 answer:
user100 [1]3 years ago
6 0
Group (1) is alkali metal and its elements have 1 valence electron. Oxygen (O) valency is 2, and together they can form compounds with the general formula X2O.

Therefore, (1) Group 1 is the correct answer.

Hope this helps~
You might be interested in
What is a climograph
Otrada [13]
A climograph is a dual-purpose graph, showing two different kinds of information. A bar graph shows how much precipitation a given place receives during a period of time. A line graph shows the temperature conditions for the same place during the same period of time.
8 0
3 years ago
g, Assuming the precipitate is totally insoluble in water, which aqueous ions will be present in the solution (collected in the
Allushta [10]

Answer:

Cl⁻, Na⁺, OH⁻

Explanation:

The titration is:

CuCl₂(aq) + 2 NaOH(aq) → Cu(OH)₂(s) + 2 NaCl(aq)

In solution, before the reaction, the ions are Cu²⁺ and Cl⁻. The addition of NaOH (Na⁺ + OH⁻) produce the precipitation of Cu²⁺ forming Cu(OH)₂(s). When you reach the equivalence point, there is no Cu²⁺ because precipitates completely. All OH⁻ ions reacts when are added but when Cu²⁺ is finished, excess OH⁻ ions still in solution helping to detect the equivalence point.

Thus, ions present after the equivalence point are:<em> Cl⁻, Na⁺</em> (Don't react, spectator ions), and <em>OH⁻</em>.

3 0
3 years ago
Pre-laboratory Questions 1. Using LeChâtelier’s principle, determine whether the reactants or products are favored and the direc
3241004551 [841]
I think the answer is C but don’t quote me on that
8 0
2 years ago
An aircraft cannot reach flying speed on a short runway. Someone suggests reducing its cargo load. Which of Newton's laws is bei
ELEN [110]

Answer:

Second Law

Explanation:

Newton's second law states that the acceleration caused in a body is directly proportional to the force applied and inversely proportion to the mass of the body.

This is given by :

Acceleration=\frac{Force}{Mass}

In this case the suggestion given to reduce the aircraft's cargo load is the right move as reducing the load on the aircraft will decrease the mass of the whole aircraft.  This in turn will help the aircraft to accelerate more as acceleration inversely varies with mass. Thus the aircraft will be able to reach its flying speed even on a short run way.

Hence, Newton's second law is applied.

6 0
3 years ago
Question 1 of 7
nlexa [21]

Answer:

Explanation:B ice melting is a phiyscal change and the mass of the substance remains the same

3 0
2 years ago
Read 2 more answers
Other questions:
  • Seven vans each hold 6 passengers. Each passenger is carrying 20 candies divided equally among 5 small boxes. How many candies a
    5·1 answer
  • What is the formula for diphosphorus tetrabromide
    15·1 answer
  • Which word refers to the smallest functional unit of living thing
    7·1 answer
  • Chemistry- "write the products expected from each acid-base reaction shown below........
    6·1 answer
  • Dominic made the table below to organize his notes about mixtures,
    12·1 answer
  • ¿para que se utilizan los métodos de fraccionamiento de fases?
    6·1 answer
  • What acid chloride would be needed to prepare the following ketone from benzene using a Friedel-Crafts acylation? Click the "dra
    15·1 answer
  • Identify which redox reactions occur spontaneously in the forward direction. Check all that apply.
    5·1 answer
  • Can someone help its not hard. What are the cons of using a cup made of plastic?
    5·1 answer
  • 30 pts for all answers pls​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!