Answer:
The answer is 11.02 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density = 5.8 g/ml
volume = final volume of water - initial volume of water
volume = 12.4 - 10.5 = 1.9 mL
The mass of the rock is
mass = 5.8 × 1.9
We have the final answer as
11.02 gHope this helps you
Answer:
110.2 g
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
(8.6B) Speed, Velocity, and Acceleration:Question 1 What two factors are needed in order to compute the speed of a car? Select one:
A speed and acceleration
B:acceleration and time
c:speed and distance
D:distance and time
Answer:
D: distance and time
Explanation:
The formula for velocity (or speed) is calculated by dividing distance by time.
For example, if the distance is 100 ft in 2 seconds, the speed of a car is 50 ft/sec.
The Essential part of Bohr’s Model is
Answer:The model states that electrons in atoms move in circular orbits around a central nucleus and can only orbit stably in certain fixed circular orbits at a discrete set of distances from the nucleus. These orbits are associated with definite energies and are also called energy shells or energy levels.
bohrs model and other models are really hard to understand but i hope this will help you!
A person weighs a different amount on other surfaces in space than they do on Earth because the gravitational pull of each surface is different than that of Earth. The table and graph show the weights of objects on Earth, Mars, and the Moon. Weight on Earth and Mars Weight on Earth, e 90 pounds 120 pounds 160 pounds Weight on Mars, a 36 pounds 48 pounds 64 pounds Weight on Earth and Moon A graph has weight on earth (pounds) on the x-axis, and weight on moon (pounds) on the y-axis. A line goes through points (60, 10) and (120, 20). If a person weighs 240 pounds on Earth, what would be the difference in weight of the same person on Mars and on the Moon (based on the table and graph)? The person weighs 56 pounds more on Mars than on the Moon. The person weighs 56 pounds more on the Moon than on Mars. The person weighs 560 pounds more on Mars than on the Moon. The person weighs 560 pounds more on the Moon than on Mars.
Answer:
A
Explanation:
Answer:
A-The person weighs 56 pounds more on Mars than on the Moon
Explanation:
Just did the test
Something that is mallleable is a hard b bendable c smooth d rigid
Answer:
A bendable
Explanation:
I got 100 on that test
Signs of a chemical change
Answer: There are five signs of chemical change
Color ChangeProduction of an odorChange of TemperatureEvolution of Gas (bubbles start to form)Precipitate (starts to form a solid)When these signs start to form you know chemical change is at work.
Hope this helps :)
what are 4 physical properties of Copper wire?
Answer:
Malleable, Conductive, Lustre and Ductile
Answer: 1-it is solid, 2- it is orangish red, 3- it can be bent and 4-is M.P is very high
Explanation:
Unlike animal cells, plant cells have
a
Chloroplasts, Cell Wall, and 1 Large Vacuole
b
Cell Wall, Mitochondria, and Many small Vacuoles
c
Chloroplasts, Cell Wall, and Mitochondria
Answer:
b
Explanation:
Answer:
A. Chloroplasts, Cell Wall, and 1 Large Vacuole
Explanation:
Because they are plants, theres no other reason
which metalloid has three valence electrons
Answer:
boron is your answer :)
Answer:
boron :))
Explanation:
took the test
156 g sample of steel has a volume of 20.0 mL. What is the density of the steel sample? a g/cm3 Your answer should be rounded to three significant figures. Do not include nits in your answer.
Answer:
The answer is
7.80Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question
mass of metal = 156 g
Since 1 mL = 1 cm³
20 mL = 20 cm³
volume = 20 cm³
It's density is
[tex]density = \frac{156}{20} = \frac{39}{5} \\ [/tex]
We have the final answer as
7.80 g/cm³ to 3 significant figuresHope this helps you
Answer:
7.8g/cm³
Explanation:
Formula is [ d = m/v ] where m = mass and v = volume.
We are given both "m" and "v" so we can solve for the density.
d = 156/20
d = 7.8
Best of Luck!
A lithium atom contains 3 protons, 4 neutrons and 3 electrons. What would be formed if one proton is added to this atom?
28Which is true?
a)All elements are made of atoms.
b)All atoms are made of elements.
c)Atoms can be seen with normal microscopes.
d)Only some types of matter are made of elements.
29Which particles make up the center of an atom?
A) only protons
B) only electrons
C)protons and neutronD)neutrons and electrons
look at the image djsksk
You poor human djsksk-
Answer:
The first one is qualitative.
Second one is quantitative.
Third one is qualitative.
Fourth one is quantitative.
Explanation:
Quantitative data is information about quantities; that is, information that can be measured and written down with numbers. Qualitative data is information about qualities; information that can't actually be measured.
I hope this helps! <3
~Sakura Hitoroku
Convert 7.801,000,000 to scientific notation. x10 what is the exponent for that
Explanation:
7,801,000,000 = 7.801 × 10^9
If you have an initial water level in a graduated cylinder of 15 mL and your
final water level after placing a 2g aluminum piece of metal in it is 19 mL,
what is the density of the aluminum in g/mL?
Formula? Work? Answer?
Answer:
The answer is
0.5 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass of aluminum = 2 g
volume = final volume of water - initial volume of water
volume = 19 - 15 = 4
volume = 4 mL
The density of the metal is
[tex]density = \frac{2}{4} = \frac{1}{2} \\ [/tex]
We have the final answer as
0.5 g/mLHope this helps you
Which of the following statements is correct about the force of gravity between two objects?
A. it depends on the shape of the objects.
B. It is weaker when the objects are closer.
C. It depends on the temperature of the objects.
D. It is stronger when the objects are closer.
Answer: D
Explanation:
Shape and temperature have nothing to do with gravity. You could take a circle block and a square block and put it on the ground and they will stay there. Gravity is not weaker when objects are closer together because of Newtons law of gravitation.
Answer:
givve them brainliest
Explanation:
Consider these scenarios. Scenario A: Carmen reads an article in Tasty Food magazine stating that eating an apple can help you feel awake and alert. Scenario B: Yuki reads an article in the Professional Journal of Medicine stating that ginger root can help prevent some types of cancer. Which article is more likely to have been peer reviewed? How do you know?
Answer:
Scenario B
Explanation:
In Scenario B; Yuki reads an article in the Professional Journal of Medicine stating that ginger root can help prevent some types of cancer. The article was published in a professional journal. Manuscripts sent to professional journals for publication must pass through a peer review process in order to ascertain the reliability of the data presented.
Magazine articles may not go through a peer review process since it is not written for the consumption of a professional audience.
Answer:
Sample Response: The article that Yuki read (Scenario B) has been peer reviewed. This article is published in a scientific journal and has been judged for quality by other professionals in the field.
Explanation:
Anyone knows this please help me
Ok so do you know the steps to do it if so post the steps and i can help you from there.
Does cool air push warm air upward?
Answer:
Cooler, denser air flows in underneath the warmer, less dense air, and pushes the warmer air upward. When this air cools, it becomes more dense than the warmer air beneath it. The cooled air sinks and moves under the warmer air.
Answer
Hot air is less dense than cold air, which is why hot air rises and cold air sinks, according to the United States Department of Energy. Hot and cold air currents power the weather systems on earth. The sun plays a major role in heating the planet, which also creates hot and cold air energy systems. Warm air currents typically bring rain, because they form over oceans. That’s why hurricanes and tropical storms form at sea and eventually move toward land.
What is the difference between a number and a measurement ?
Answer:An exact number has absolutely no uncertainty in it. Exact numbers cannot be simplified and have an infinite number of significant figures. Measured numbers have a limited number of significant figures.
Explanation:
Which one has more density?
Concrete Block
Styrofoam
Answer:
Concrete block has more density
when chemical w is added to a liquid is it a compund or a element
Element
itll turn it in to an elment as the chemicals formin te liquidh
name the fuel used in rockets
Which lists imaging techniques that use wave behaviors in order of increased risk of cancer from least risk to
greatest?
sonography, X-ray radiography, CT scan
CT scan, X-ray radiography, sonography
sonography, CT scan, X-ray radiography
X-ray radiography, sonography, CT scan
Answer:
sonography, X-ray radiography, CT scan
Explanation:
i like yo cut g
The imaging techniques that use wave behaviors in order of increased risk of cancer from least risk to greatest is:
Option A.
Imaging techniques:These procedures incorporate x-beams, figured tomography filters, and attractive reverberation imaging. These imaging devices let your PCP "see" inside your body to get an "image" of your bones, organs, muscles, nerves, and ligaments. This is a way the specialist can decide whether there are any anomalies.
The imaging techniques that use wave behaviors in order of increased risk of cancer from least risk to greatest are:
A. sonography< X-ray radiography<CT scan
Find more information about imaging techniques are:
brainly.com/question/7642430
how many protons are in each of the following
carbon has 6 protons and hydrogen has 1 proton
What do you know for sure after one test? Two tests? Three tests?
Any environmental concerns about the use of flerovium
Answer: contributes to greenhouse gasses, can kill plants and animals when breathed in
Explanation:
What are the three major kinds
of rocks?
the three major kinds of rock are
* igneous rock
* sedimentary rock
* metamorphic rock
Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury
Answer:
The answer is 13.6 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass of mercury = 306 g
volume = 22.5 mL
The density is
[tex]density = \frac{306}{22.5} \\ [/tex]
We have the final answer as
13.6 g/mLHope this helps you
Answer:
13.6
Explanation:
the speed of sound at 20°c in dry air is ___m/s.
Answer:
343 meters per second
Explanation:
In SI units with dry air at 20°C (68°F), the speed of sound c is 343 meters per second (m/s). per hour (mi/h or mph), 12.79 miles per minute (mi/min), 0.2131 miles per second (mi/s), That is 0.343 kilometers per second (km/s), or 20.58 kilometers per minute (km/min).
When a piston is pushed down on a cylinder, the pressure on the gas in the cylinder increases from 125 kPa to 375 kPa. The initial volume is 3.3 L. What is the final volume?
Answer:
The final volume is 1.1 L.
Explanation:
Given data:
Initial pressure of gas = 125 KPa
Final pressure of gas = 375 KPa
Initial volume = 3.3 L
Final volume = ?
Solution:
The given problem will be solved through the Boly's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
125 Kpa × 3.3 L = 375 Kpa × V₂
V₂ = 412.5 KPa. L/375 Kpa
V₂ = 1.1 L
The volume of gas is reduced to the 1.1 L because of increasing pressure.
