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
Vladimir [108]
3 years ago
9

Which of these elements has four valence electrons

Chemistry
1 answer:
exis [7]3 years ago
7 0
What are the elements?

You might be interested in
The making of ice cubes is an endothermic reaction
Rina8888 [55]

Answer:

no

Explanation:

it is not endothermic reaction

4 0
3 years ago
Which statement is true because of newtons second law ?
katrin2010 [14]
Newton's second law, by definition, states that, <span> The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. Therefore, based on the given options above, the correct answer would be option D: </span><span>when the net force on an object decreases, the objects acceleration decreases.</span>
7 0
3 years ago
Read 2 more answers
Assuming fixed shape when heated?​
Fittoniya [83]

Answer:

Assuming that the atmospheric pressure is standard, the temperature will rise steadily until it reaches 100°C

3 0
3 years ago
How many atoms in Alka-Seltzer
Salsk061 [2.6K]
Hope this helps solve your problem!

4 0
3 years ago
Read 2 more answers
Given: CaC2 + N2 → CaCN2 + C In this chemical reaction, how many grams of N2 must be consumed to produce 265 grams of CaCN2? Exp
weeeeeb [17]

Answer : The grams of N_2 consumed is, 89.6 grams.

Solution : Given,

Mass of CaCN_2 = 265 g

Molar mass of CaCN_2 = 80 g/mole

Molar mass of N_2 = 28 g/mole

First we have to calculate the moles of CaCN_2.

\text{Moles of }CaCN_2=\frac{\text{Mass of }CaCN_2}{\text{Molar mass of }CaCN_2}=\frac{265g}{80g/mole}=3.2moles

The given balanced reaction is,

CaC_2+N_2\rightarrow CaCN_2+C

from the reaction, we conclude that

As, 1 mole of CaCN_2 produces from 1 mole of N_2

So, 3.2 moles of CaCN_2 produces from 3.2 moles of N_2

Now we have to calculate the mass of N_2

\text{Mass of }N_2=\text{Moles of }N_2\times \text{Molar mass of }N_2

\text{Mass of }N_2=(3.2moles)\times (28g/mole)=89.6g

Therefore, the grams of N_2 consumed is, 89.6 grams.

5 0
3 years ago
Read 2 more answers
Other questions:
  • the half life of the radioactive element strontium-90 is 29.1 years. If 16 grams of strontium-90 are initially present, how many
    5·2 answers
  • What is the total number of different elements present in NH4NO3
    7·2 answers
  • Consider this row in the periodic table of elements. As we move from left to right, across the row, the elements ... A) change f
    7·2 answers
  • What is the predicted order of first ionization energies from highest to lowest for aluminum, phosphorus, silicon, and sulfur?
    9·2 answers
  • What is the frequency and energy per quantum (in Joules) of :
    13·1 answer
  • What is always included in a comparative investigation?
    15·2 answers
  • At which temperature can water contain the most<br> dissolved sugar?
    5·1 answer
  • What's the partial pressure of carbon dioxide in a container that holds .35 atm of nitrogen, and .12 atm of hydrogen and has a t
    5·1 answer
  • Sinong pilipino dito kawaykaway naman kayo dyan haha​
    14·1 answer
  • Derrick decided to research what factors might affect the properties of the solubility of a solution. After completing his resea
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!