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
Semenov [28]
2 years ago
9

How many atoms of nitrogen are in Fe2(NO4)2?

Chemistry
1 answer:
djverab [1.8K]2 years ago
5 0

<em>the</em><em> </em><em>number</em><em> of</em><em> </em><em>nitrogen</em><em> </em><em>atoms</em><em> </em><em>in</em><em> </em><em>the </em><em>compound</em><em> </em><em>is</em><em> </em><em>two</em>

You might be interested in
If the same amount of heat is added to 25.0 g of each of the metals, which are all at the same initial temperature, which metal
AVprozaik [17]

Answer:

The bismuth sample.

Explanation:

The specific heat c of a substance (might not be a metal) is the amount of heat required for heating a unit mass of this substance by unit temperature (e.g., \rm 1\; ^{\circ}C.) The formula for specific heat is:

\displaystyle c = \frac{Q}{m \cdot \Delta T},

where

  • Q is the amount of heat supplied.
  • m is the mass of the sample.
  • \Delta T is the increase in temperature.

In this question, the value of Q (amount of heat supplied to the metal) and m (mass of the metal sample) are the same for all four metals. To find \Delta T (change in temperature,) rearrange the equation:

\displaystyle c \cdot \Delta T = \frac{Q}{m},

\displaystyle \Delta T = \frac{Q}{c \cdot m}.

In other words, the change in temperature of the sample, \Delta T can be expressed as a fraction. Additionally, the specific heat of sample, c, is in the denominator of that fraction. Hence, the value of the fraction would be the largest for sample with the smallest specific heat.

Make sure that all the specific heat values are in the same unit. Find the one with the smallest specific heat: bismuth (\rm 0.123 \; J \cdot g\cdot \,^{\circ}C^{-1}.) That sample would have the greatest increase in temperature. Since all six samples started at the same temperature, the bismuth sample would also have the highest final temperature.

3 0
3 years ago
Help with this please.
chubhunter [2.5K]

Answer:

a

Explanation:

cause its a tell me if you get it right hsnsnsjsjsjsnanajaksks bshsjjssjjsjddjhs h sshheggduejnd uhh cig jsjdufudneidisjsjjshhshshshhzhshjdhdudjsjdjdjdjdjdjdjsjsjsjsjsjsjdjdjsiiddudjdjdjsjdjjdjduxixuxixxuchucucufididididjdhxuueudhh see h bj too yxhxuxjdjsjsu

6 0
3 years ago
A single electron configuration can represent multiple atoms. The one below represents the following atoms with different charge
valentinak56 [21]

Answer:

To have the electronic configuration equal to 1s²2s²2p⁶3s²3p⁶4s²3d⁷, the chemical element must have an electrical charge equal to 27, that is, it must have 27 electrons, such as Cobalt (Co), for example.

Explanation:

The electronic configuration shown in the question above is known as the Linus Pauling distribution and represents the energy sub-levels that an electrically charged atom can have in relation to the amount of electrons it has.

The layers sub-levels are presented in the following order 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹º 4p⁶ 5s² 4d¹º 5p⁶ 6s² 4f14 5d¹º 6p⁶ 7s² 5f14 6d¹º 7p⁶. Where the small numbers represent the number of electrons in each sub-level and the large numbers represent the layers of electronic distribution.

Accordingly, we can see that an atom that has the configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁷ has 27 electrons, like Cobalt.

6 0
3 years ago
Which of these statements best describes the relationship between elements, compounds, and pure substances?
olchik [2.2K]

pure substances can be divided into two groups; elements and compounds

5 0
3 years ago
Read 2 more answers
Which of these can be classified as a pure substance? Help please
saw5 [17]

Answer: The answer is salt

4 0
3 years ago
Read 2 more answers
Other questions:
  • Ionic compounds are solid at room temperature because they have
    10·1 answer
  • Complete the following sentence. In a fluid, pressure __________ with depth. increasesdecreasesdoesn't change
    14·1 answer
  • Classify each of the following pure substances as an element or a compound. a. helium gas (He) b. mercury (Hg) in a thermometer
    9·1 answer
  • As the number of effective collisions between reacting particles increases, the rate if a chemical reaction:
    14·1 answer
  • How does this splitting wedge make work easier?
    6·1 answer
  • What is the molecular formula of a compound that contains 38.6% C, 45% N, and 16.4% H, if 0.158 g of the compound occupies 125 m
    14·1 answer
  • PLEASE HELP ME ASAP THIS IS DUE IN 10 MINUTES AND I AM STUCK!!
    15·2 answers
  • The particle diagram shown above represents the dissolution of CuCl(s) assuming an equilibrium concentration for Cu+ ions of abo
    15·1 answer
  • Substance X is added to the mixture shown below to reduce the __________ __________ of the aluminium oxide in bauxite. What two
    5·1 answer
  • How many groups are in the modern periodic table?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!