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
Oduvanchick [21]
4 years ago
6

A student finds a piece of metal that she thinks is aluminum. She finds the volume to be 245 cm^3 and the mass to be 612 grams.

Calculate the density of metals. Is the metal aluminum?
Chemistry
1 answer:
natta225 [31]4 years ago
3 0

Answer:

Density = 2.5 g/cm³ , The metal is aluminium.

Explanation:

Density is defined as the ratio of the mass and the volume

Thus,

Density=\frac {Mass}{Volume}

Given that:

Mass  = 612 grams

Volume = 245 cm³

Thus, Density is:

Density=\frac {612}{245}\ g/cm^3

<u>Density = 2.5 g/cm³</u>

Metals are shiny with high density.

<u><em>The density of aluminium falls is approx 2.6 g/cm³ and not other metal's density falls in this range. </em></u>

<u><em>The metal is aluminium.</em></u>

<u><em></em></u>

You might be interested in
10 points get it right ADVPH
Sav [38]

Answer:

Advanced Pharmaceutics Inc

Explanation:

Advanced Pharmaceutics Inc

somehow I know this acroynom

8 0
3 years ago
What are the three parts of a nucleotide? an organic base, a protein, and a sugar an organic base, a phosphate group, and water
Katena32 [7]

Answer: an organic base, a phosphate group, and a sugar

Explanation:

A nucleotide is made up of 3 parts. We know a nucleotide is not made up of water so we are left with 2 choices. Nucleotides are made up of phosphate group, 5-carbon sugar, and nitrogenous base. The nitrogeneous base is typically adenine. The answer choice that matches this the closest is an organic base, a phosphate group, and a sugar.

The organic base is the nitrogeneous base and the sugar is the 5-carbon sugar.

8 0
4 years ago
Which of the following is true of a compound but not a mixture? (1) A compound contains more than one element.
otez555 [7]

The composition of a compound does not vary because it is made up of fix ratio by mass.

<h3>What is compound?</h3>

A compound is a chemical substance that is composed of more than one element that held together by chemical bonds and produces fix ratio by mass so we can conclude that the composition of a compound does not vary because it is made up of fix ratio by mass.

Learn more about compound here: brainly.com/question/634206

7 0
2 years ago
You have 15 grams of ice at 0°C. How much energy is needed to melt the ice and warm it to 25°C. Ice melts at 0°C. The specific h
azamat

Answer:

d. 1600 calories

Explanation:

The heat of fusion of water, L, is the amount of heat per gram required to melt the ice to water, a process which takes place at a constant temperature of 0 °C. The specific heat of water, c, is the amount of heat required to change the temperature of 1 gram of water by 1 degree Celsius.

We will convert the units of c from Jg⁻¹°C⁻¹ to cal·g⁻¹°C⁻¹ since the answers are provided in calories. The conversion factor is 4.18 J/cal.

(4.18 Jg⁻¹°C⁻¹)(cal/4.18J) = 1 cal·g⁻¹°C⁻¹

First we calculate the heat required to melt the ice, where M is the mass:

Q = ML = (15 g)(80 cal/g) = 1200 cal

Then, we calculate the heat required to raise the temperature of water from 0 °C to 25 °C.

Q = mcΔt = (15 g)(1 cal·g⁻¹°C⁻¹)(25 °C - 0 °C) = 380 cal

The answer is rounded so that there are two significant figures

The total heat required for this process is (1200 cal + 380 cal) = 1580 cal

The rounded answer is 1600 calories.

3 0
3 years ago
Here is the chemical reaction that represents solid lead chloride dissolving in water:
zubka84 [21]

Answer:

B. Add more chloride ions

Explanation:

Because we know based on lechatlier that any disturbance to equilibrium will make the shift act accordingly. If something is removed it wants to shift to side where it is removed to compensate for the change, if something is added it wants to move away from it to minimize the change.

Therefore, if you add chloride ions, the equilibrium shifts to left to make more solid lead chloride.

4 0
3 years ago
Other questions:
  • Sheena wants to measure the volume of a ball that is 24 cm across. How should she set up her equation?
    7·2 answers
  • What would your weight on the moon be?
    15·1 answer
  • I really need help please
    12·1 answer
  • True or false water readily dissolves most polar compounds
    6·2 answers
  • How plastic polymer types of compositions, surface hydrophobicity, crystallinity, porosity, size, shapes, aging or degree of wea
    10·1 answer
  • 12500 J/ (106 g) (4C) reduce to one
    13·2 answers
  • Question 27 (1 point)
    12·2 answers
  • If you were an energy source, which energy would you be? why?
    12·1 answer
  • In electroplating, how should the object that will be plated be connected in the electrolytic cell?
    7·1 answer
  • Câu 1: Oxide nào sau đây là oxide lưỡng tính? 2 MgO A Fe203 B ZnO Cao D
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!