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
ch4aika [34]
3 years ago
6

1. How many elements are in the following equation, FeCrO4 ? 1 2 3 4 O

Chemistry
2 answers:
N76 [4]3 years ago
8 0

Answer:

there are 3 different elements in that equation

Explanation:

Fe is the element Iron, Cr is the element Chromium, and O is oxygen

disa [49]3 years ago
5 0
I believe The answer is three
You might be interested in
An atom has 32 protons, 40 neutrons, and 32 electrons. What is the charge of the atom’s nucleus?
eimsori [14]
The charge is neutral.

To find the charge, subtract the number of electrons from the number of protons. Because they are the same, there is no charge.
8 0
3 years ago
I think it’s D but I’m not sure.. Please help!
alisha [4.7K]

Answer:   I think it’s D?

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the following factors could prolong the availability of fossil fuels
Artist 52 [7]
The answer is D=Making new fossil fuels, hope this helps:)
5 0
3 years ago
CaO + H2O -> Ca(OH)2
yawa3891 [41]

The % yield of Ca(OH)₂ : 62.98%

<h3>Further eplanation </h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

CaO + H₂O ⇒ Ca(OH)₂

mass CaO= 4.2 g

mol CaO(MW=56,0774 g/mol) :

\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{4.2}{56,0774 g/mol}\\\\mol=0.075

mol Ca(OH)₂ based on mol CaO

mol ratio CaO : Ca(OH)₂,= 1 : 1, so mol Ca(OH)₂ = 0.075

mass Ca(OH)₂(MW=74,093 g/mol) ⇒ theoretical

\tt mass=mol\times MW\\\\mass=0.075\times 74,093 g/mol\\\\mass=5.557~g

% yield :

\tt =\dfrac{actual}{theoretical}\times 100\%\\\\=\dfrac{3.5}{5.557}\times 100\%\\\\=62.98\%

8 0
2 years ago
Please help!
liberstina [14]

Answer:

To help determine what type of rock it is

Explanation:

Geologists can use information such as color, hardness, grain size, texture and other aspects of the rock to figure out the classification of a rock. for example, a light blue rock with no visible grain that is translucent and has a hardness of 9 is most likely going to be a saphire. hope this helps!!!!

8 0
2 years ago
Read 2 more answers
Other questions:
  • What method would best allow these three different scientists to demonstrate their concepts?
    7·1 answer
  • Hydrangea plant's petals change to which colour on the addition of acids?
    11·1 answer
  • Are sharks mammals pls answer​
    10·1 answer
  • Which group 16 element combines with hydrogen to form a compound that has the strongest hydrogen bonding between its molecules?
    13·1 answer
  • The solubility of AgNO3 at 10° and 20°C are 170g and 222g per 100g H2O. What is the sign of change of heat of solution for AgNO3
    5·1 answer
  • If we add 20g of salt to 150g of water, what is the concentration by mass of the solution?
    15·1 answer
  • What is the source of genetic material in organisms that reproduce sexually?
    9·2 answers
  • Which of earth's spheres consists of all living things?
    5·1 answer
  • The fuel used to power the booster rockets on space shuttles is a mixture of aluminum metal and ammonium perchlorate. the follow
    9·1 answer
  • Sodium tungstate is Na₂WO4. Therefore, the formula for gold(III) tungstate is
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!