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
gogolik [260]
3 years ago
5

Iron has a density of 7.87mL. How much mass would a 12.3mL sample contain?

Chemistry
1 answer:
algol [13]3 years ago
4 0

The correct answer is 96.80 grams

Explanation:

The density of a substance shows the total mass the substance contains in 1 mL or 1 cm3 as density is calculated by using the formula D= M (mass) / V (volume). This implies, Iron contains 7.87 grams per milliliter. Moreover, this value and formula can be used to calculate the mass or volume of any other sample. The process to calculate the mass of an iron sample with a volume of 12.3 mL is shown below.

D = M ÷ V

7.87 mL = x ÷ 12.3 mL - x represents the missing value. Now find the value of x by solving the equation

x = 7.87 · 12.3  

x = 96.80

This means a sample of 12.3 mL contains a mass of 96.80 grams. Also, you can know this value is correct because if you divide the mass by the value the density is the same (96.80 grams ÷ 12.3 mL = 7.87 g/mL)

You might be interested in
Which is an unnecessary rule for writing chemical formulas?
balandron [24]
The correct answer are

identify the positive ion and charge
balance the charges
identify the negative ion and charge
7 0
3 years ago
What quality of electrons determine whether or not an electron will either pair up with another or be able to be shared between
melamori03 [73]

Answer:

Joe

Explanation:

Joe is equal to mama : )

6 0
3 years ago
During combustion, methane yields carbon dioxide and water. The unbalanced equation for this reaction is:CH4(g)+O2(g) → CO2(g)+
almond37 [142]

Answer:

CH₄(g)  +  2O₂(g) → CO₂(g)  +  2H₂O(l)

Mole ratios for the balanced equation be:

1:2, 2:1, 1:1, 1:2, 2:2

Explanation:

CH4(g)+O2(g) → CO2(g)+ H2O(l)

To balance a chemical equation, you must have the same mole of each element in both sides of the reaction (reactant side and product side)

CH₄(g)  +  2O₂(g) → CO₂(g)  +  2H₂O(l)

2 C

8 H

8 O

In  both side.

It takes 1 mole of methane to react with 2 mole of oxygen in order to produce 1 mol of dioxide and 2 mole of water.

Mole ratios for the balanced equation be:

Mole ratios for the balanced equation be:

1:2, 2:1, 1:1, 1:2, 2:2  - We should compare each compound

1 mol methane → 2 mole of oxygen

2 mole of oxygen → 1 mol of methane

2 mole of oxygen → 1 mol of dioxide

1 mole of dioxide → 1 mol of Methane

2 mole of water → 2 mole of oxygen (the same as opposite)

1 mol methane →  2 mole of water

2 mol of water → 1 mol of methane

4 0
3 years ago
Please help asap How can the effects of technology be described? This is Science not Chemistry sry
Sindrei [870]

Answer:

Chemistry is used in forensic science to uncover information from physical evidence.

Hope this helps

7 0
3 years ago
How many grams of Hydrogen (H) would need to react with 143 grams of Oxygen (O) to make 235 grams of Water (H20)? 235
drek231 [11]

Answer:

45 grams

Explanation:

7 0
2 years ago
Other questions:
  • In these zones, high solar elevation angles occur throughout the year, and this makes ________ consistently warm.
    12·1 answer
  • 1. The density of solid Cu is 8.96g/cm3 . How many atoms are present per cubic centimeter(cm3) of Cu ?
    12·1 answer
  • Complete the sentence. ______________ is thought to be most responsible for the salinity of the oceans.
    12·1 answer
  • What is the mass of 3.6 x 10∧24 atoms of Zinc (Zn)?
    11·1 answer
  • What are two factors that determine the concentration of hydronium (or hydroxide) ions in an acid (or base) solution?
    11·2 answers
  • ________ is the force that keeps planets in orbit around the sun
    6·2 answers
  • A child’s bike containing 5.25 kg of iron rusts according to the thermochemical equation shown here:
    15·1 answer
  • PLEASEEEEEEE HELPPPPPPPPPPP
    6·1 answer
  • Which of the following is true about this lever?
    6·2 answers
  • CrO42-+2H+=Cr2O7^2-+H2O
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!