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
Tema [17]
2 years ago
8

How many Iron atoms (Fe) are represented in the following formula?

Chemistry
1 answer:
rosijanka [135]2 years ago
8 0

Answer:

5

Explanation:

pa mark brainliest

You might be interested in
Which of the following is a list of the minimum amount of data needed for determining the molar enthalpy of solution of KCl(s) i
Gre4nikov [31]

Answer:

 (C) Mass of KCl(s), mass of H20, initial temperature of the water, and final temperature of the solution

Explanation:

molar enthalpy of solution of KCl(s) is heat evolved or absorbed when one mole of KCl is dissolved in water to make pure solution . The heat evolved or absorbed can be calculated by the following relation.

Q = msΔt where m is mass of solution or water , s is specific heat and Δt is change in temperature of water .

So data required is mass of water or solution , initial and final temperature of solution , specific heat of water is known .

Now to know molar heat , we require mass of solute or KCl dissolved to know heat heat absorbed or evolved by dissolution of one mole of solute .

3 0
3 years ago
What is one way to test whether an unknown solution is acidic or basic?
sertanlavr [38]

Answer: There are several ways. The first that comes to mind is a pH meter. A pH electrode Is lowered into the solution, and (Assuming) the pH Meter has been properly calibrated, and the temperature of the solution is set to the calibration of the Meter, the pH can be read directly from an analogue scale or digital readout. Below 7 is acidic, 7 is Neutral, (like Pure Water), and over 7 is Alkaline, or Basic.

A useful, but less accurate method is the use of any number of “pH Indicator Solutions”, which are essentially a type of various colored dyes that change color within differing pH ranges. Usually, if the pH is unknown, a small amount of solution is removed from the container and tested separately - in a “well plate”, or similar method.

These types of dyes, or Indicator Solutions, can be dried upon strips of “pH indicator Paper”, which, depending upon the type can be very useful when carrying out more precisely arrived at pH tests like Titration.

Just to see if a solution is “Acid” or “Base”, Litmus paper is used; “a Red color shows Acidity, and a Blue color, a Base”; ergo, “An Acid Solution will turn Litmus Paper, Red”.

4 0
3 years ago
What forces are important in the creation of magma?
kherson [118]
"the factors that mainly affect in the formation of magma can be summarized into three: temperature, pressure, and composition"

I hope this helps =^._.^=
4 0
3 years ago
Two grams of potassium chloride are completely dissolved in a sample of water in a beaker. This solution is classified as
Eddi Din [679]
The answer is (3) a homogeneous mixture. The difference between homogeneous and heterogeneous mixture is the degree of the mixture being mixed. Due to the completely dissolved and the dissolving ability of KCl, we can get the answer,
5 0
3 years ago
Read the word equation: “Propane gas plus oxygen gas produces __________.”
Dmitriy789 [7]

Answer:

Propane gas plus oxygen gas produces water and carbon dioxide.

Explanation:

This is the initial chemical equation: C3H8 + O2 = CO2 + H2O

This is the balanced chemical equation: C3H8 + 5 O2 = 3 CO2 + 4 H2O

5 0
3 years ago
Other questions:
  • A liquid sample, with a density of .0915 g/mL has a mass of 17.7 grams.
    13·1 answer
  • Need help !!!!! Stuck asap
    7·1 answer
  • ASAP Which of these mixtures would best be separated through distillation?
    6·1 answer
  • According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?
    7·2 answers
  • What happens to an object as its thermal energy increases?
    8·1 answer
  • What is the study of the cryosphere called?
    13·1 answer
  • Ethyl alcohol evaporates faster then water, why?​
    8·2 answers
  • What is the temperature of a sample of propanone when the vapor
    11·2 answers
  • Which of the following best describes chicken noodle soup?
    9·2 answers
  • A mutation can be defined as a change in an organism's
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!