formula for density of liquid = mass ÷ vol
= 14.0 g ÷ 18.0 cm³
= 0.77778 g/cm³ ( 5sf)
= 0.778 g/cm³ ( 3sf )
18.0 cm³ is the same as 18.0 ml
Therefore, the liquid will float on water as the water is denser than the liquid.
18.0 cm³ is equivalent to 18.0 ml, in light of the fact that water is denser than liquid, the liquid will float on it.
What is the density of a liquid?Density is defined as d = M/V, where M stands for mass and V for volume. The unit of density that is most frequently used is grams per cubic centimeter.
The formula for liquid density is mass divided by volume.
= 14.0 g ÷ 18.0 cm³
= 0.77778 g/cm³
= 0.778 g/cm³
The same procedure used to determine a solid's density is used to determine a liquid's density. Calculate the fluid's mass, then its volume, then divide mass by volume.
To determine the fluid's mass, weigh the fluid in the container, pour it out, weigh the empty container, and then subtract the empty container's mass from the mass of the filled container.
Therefore, in light of the fact that water is denser than liquid, the liquid will float on it.
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Rutherford’s experiments determined that the nucleus of an atom has all of the following characteristics EXCEPT that
Answer: were used to bombard metal thin foil
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Lesson 9: Matter Unit Test Physical Science A Unit 1: Matter
Name 3 common compounds, using both their chemical symbol and their name
Answer:
carbon dioxide, CO2
dihydrogen monoxide, H2O
sodium chloride, NaCl2
The three chemical compounds used in the daily life are carbon dioxide (CO2), ammonia (NH3), and water (H2O).
What is a chemical symbol?Chemical symbols are acronyms for chemical elements, functional groups, and chemical substances that are used in chemistry.
Chemical element symbols are typically composed of one or two letters from the Latin alphabet, with the first letter capitalized.
A chemical symbol, also known as an element symbol, is a letter or a combination of letters that represents a chemical element.
Because it is shorter and easier to write, the chemical symbol for an element is used when writing the chemical formula for a molecule or when writing a chemical equation.
Carbon dioxide (CO2), ammonia (NH3), and water are the three chemical compounds encountered in daily life (H2O).
Thus, these are some of the examples of chemical compounds.
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5.
2. Which of the following statements
indicates that a new substance is
forming?
a. A liquid is changing to a solid
b. Metal is melting
C. A substance is fizzing or
bubbling
d. A liquid evaporating to a gas
Answer:
A. A liquid is changing to a solid
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Best answer tests always include the correct answer as one of the possible answer choices.
Please select the best answer from the choices provided
T
ОО
F
Answer:
Its true
Explanation:
Answer:
it is TRUE on edge
Explanation:
The mass spectrum of a sample of a pure element is shown above. Based on the data, the peak at 26amu represents an isotope of which of the following elements?
A) Al with 13 neutrons
B) Mg with 14 neutrons
C) Fe with 26 neutrons
D) Ti with 26 neutrons
Answer:
The answer is B
The correct answer is option B: Mg with 14 neutrons
The mass spectrum shows the charge to mass ratio of atoms. I can be used to sort the isotopes of an element.
Isotopy is a phenomenon in which atoms of the same element have the same atomic number but different mass numbers.
The mass spectrum of atoms separates atoms on the basis of charge to mass ratio of the isotopes.
The isotopes of magnesium are; 24Mg atom which has 12 neutrons 25Mg which has 13 neutrons, and 26Mg which has 14 neutrons.
Hence, the peak at 26amu represents 26Mg which has 14 neutrons.
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SKILL LEVEL
Beginning
Ellias is hungry for popcorn. He grabs a bag from the cabinet
and places it in the microwave. Once it has stopped popping
he opens the bag and finds lots of popped popcorn for him to
enjoy. What type of change occurs as popcorn is cooked?
a. chemical change
b. physical change
C. Material change
D.no change
Answer:
B.
Explanation:
This is physical change as the popcorn has expanded in size.
A graduated cylinder had 20mL of water. A sample of pyrite was placed in the cylinder and the volume moved to 35 mL. What is the volume of the pyrite?
what is the function of spines ?
Answer:
The spine is also designed to protect your spinal cord. The spinal cord is a column of nerves that connects your brain with the rest of your body, allowing you to control your movements. Without a spinal cord, you could not move any part of your body, and your organs could not function.
Alchemy is a branch of ancient knowledge that states lead metal is a form of gold metal. Which of these best explains whether alchemy is a science or pseudoscience? It is a science because ancient knowledge is often reliable. It is a science because metallurgy is known to be a branch of science. It is pseudoscience because ancient knowledge is mystical yet reliable. It is pseudoscience because each metal is known to be a unique element.
The best statement among the following which explains whether alchemy is a science or pseudoscience is "It is pseudoscience because each metal is known to be a unique element." Hence, Option (D) is correct.
What is Alchemy ?
Alchemy began to fully evolve into chemistry in the 17th century, with a greater emphasis on rational thought and experimentation and less emphasis on spirituality and mysticism.
The alchemists were never successful in changing lead into gold, but modern nuclear physics can accomplish this task.
Therefore , The best statement among the following which explains whether alchemy is a science or pseudoscience is "It is pseudoscience because each metal is known to be a unique element." Hence, Option (D) is correct.
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Given that the density of water is 1.00 g/mL, the density of toluene is 0.867 g/mL, and the density of chloroform is 1.48 g/mL, what layer corresponds to what compound?
Identify an example of matter and energy conservation in the world around you
Answer:
Example of the matter is ball and example of energy conservation is switching off the light.
Explanation:
The matter refers to anything that has mass, occupies some space, and has some volume. Therefore, the example of the matter is a ball, here we can see that ball occupies some space and it has volume as well as mass.
Moreover, the example of energy conservation is switching off the light when there is no use of lights. Switching off the light will conserve the consumption of energy.
Answer:
"Water can produce electricity. Water falls from the sky converting potential energy to kinetic energy"
A reaction expected to produce 245.6 g of a product produces 122.1 g of the
product. What's the percent yield?
Answer:
50%
Explanation:
% yields =(experimental yields / theoretical yields ) x100%
= 122.1÷ 245.6 ) x100% = 50%
The study of earthquakes is part of which branch of science
Answer:
Seismology
Explanation:
Seismology is scientific discipline that is concerned with the study of earthquakes and of the propagation of seismic waves within the Earth. A branch of geophysics, it has provided much information about the composition and state of the planet's interior.
Hope this helps :)
summerize in your own words Continental crust is much thicker than oceanic crust (averages between 20 to 25 miles thick), but is actually slightly less dense than oceanic crust. The main type of rock on continents is called granite. So if these two types of crust were to collide into each other, what do you think would happen to the oceanic crust? As a whole, notice that the crust is lighter than the mantle. It is sometimes said that the crust "floats" on the mantle like an iceberg in water and that is not too far from the truth and is called isostacy. Finally, the crust is the coldest, most rigid, and brittle layer with lots of folds and fractures.Recall that oceanic crust is denser than continental rock like granite. Thus when two tectonic plates collide, the denser oceanic crust will subduct underneath the lighter continental crust. If the subducting rock becomes stuck, vast amounts of energy builds up. But once the pressure and energy is too great, the rock will rupture creating powerful earthquakes. As the subducted material sinks further, it will begin to melt under great heat and pressure, becoming less dense as it melts, and rise up as magma to form dangerous composite volcanoes. Mountain ranges created by oceanic-to-continental convergence are the Andes mountains in South America, the Cascades in the western United States, and the Ring of Fire in the Pacific Ocean.
Continental crust is much thicker than oceanic crust (averages between 20 to 25 miles thick), but is actually slightly less dense than oceanic crust. The main type of rock on continents is called granite. So if these two types of crust were to collide into each other, what do you think would happen to the oceanic crust? As a whole, notice that the crust is lighter than the mantle
Which one of the following are quantitative? Choose 1 * 1. The liquid floats on water. 2. The metal is malleable. 3. The liquid has a temperature of 55.6 degrees C.
Answer:
Hey there!
Quantitative measurements have data and statistics. For example, the liquid has a temperature of 55.6 degrees C is a quantitative measurement.
Let me know if this helps :)
Mixing two clear liquids results in the formation of a whit solid. Is this a physical or chemical change?
Answer:
Chemical Change
Explanation:
It became white and became solid which makes it a chemical change.
the boiling point of a sample of pure water is found to be 102.6 degrees Celsius instead of 100 degrees Celsius at sea level state two factors that may have been resulted to this change
Answer:
Because the atmospheric pressure at higher altitudes is lower than at sea level.
Water, or any liquid for that matter, boils when its vapor pressure equals the external pressure above the liquid.
The temperature of a container of oxygen gas is increased from 149 k to 298 k which of the following statement is true
Answer:
______is used in production of hard disk.
Explanation:
what is emprical evidence
Answer:
the correct answer is
Empirical evidence is the information received by means of the senses, particularly by observation and documentation of patterns and behavior through experimentation. The term comes from the Greek word for experience,
Explanation:
hope this helps you!!
What is 5.0553 x 10^-4 in standard notation?
Answer:
0.00050553
Explanation:
when the power of ten is negative, move the decimal to the left
hope this helped!
Which atom has the same electronic structure as an argon ion?
Answer:
The chlorine atom, which starts with seven valence electrons, gains a single electron and becomes a negatively charged chlorine ion: Cl-. This ion has the same electron configuration as the noble gas argon, and therefore this ion is chemically stable too.
Roll a die and spin a spinner . This example contains
Where does water seem to defy gravity in the straw or water jug
Answer:
a capillary action moves water upward defyinggravity
A substance is made up of slow-moving particles that have very little space between them. Based on this information,
what can most likely be concluded about this substance?
It is not a gas because its particles do not move continuously
It is a gas because its particles move continuously in a straight line.
It is not a gas because its particles do not have large spaces between them.
It is a gas because its particles move in many different directions.
Answer:
It is not a gas because its particles do not have large space between them.
The substance should be
It is not a gas because its particles do not have large space between them.
The following information should be considered;
A substance should be made of particles i.e slow moved also they have little space so here it is not treated as the gas since the particles does not have huge spaced between them.Therefore, the other options are wrong.Learn more;
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Find 1.635 x 3.2 please help will mark brainlyest
Answer:
5.232
Explanation:
What is the meaning of valence
Answer:
the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with
What is the difference between Mn2+ and Mn3+? What are they called?
Answer:
i don't now
Explanation:
B-)o:-)(^^)(^^)❌❌✴️
18. The density of rubbing alcohol is .789 g/ml. What is the mass of rubbing alcohol in a 500-ml bottle of rubbing alcohol?
Answer:
The number of milliliters of isopropyl alcohol that are in a 400 ml bottle of this solution is 280 Ml
Explanation:
% V/V = volume of solute/ volume of solution x 100
Let the volume of solute be = y ml
the volume of solution = 400 ml
convert 70% to fraction = 70/100
by substituting the value in the equation
= y ml/ 400 ml = 70/100
by cross multiplication
100y =400 x70
100y= 28000
y= 280 ml
Is mowing the lawn a physical change or a chemical change?
Answer:
Physical change
Explanation:
The only change is in the shape, or length in this case, of the object. So its chemical makeup is still the same, it's still grass.
Mowing the lawn is considered a physical change. A physical change is a change in the physical properties of a substance or material without altering its chemical composition.
A physical change is a transformation that alters the physical properties of a substance, such as size, shape, or phase, without changing its chemical composition. In the case of mowing the lawn, the grass is physically cut into smaller pieces, but the individual grass blades themselves remain chemically unchanged.
When you run a lawnmower over a lawn, the sharp blades of the mower cut through the grass, trimming it to a desired height. This action changes the appearance and size of the grass, but it does not alter the identity or chemical composition of the grass. The grass blades are still composed of the same materials, such as cellulose and other organic compounds.
When you mow the lawn, you are cutting the grass blades into smaller pieces, but the grass itself remains the same chemically. The process of mowing only affects the physical appearance and size of the grass, not its fundamental composition.
Therefore, mowing the lawn is considered a physical change.
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