Answer: (B) CFCs were replaced with other products
Answer:
B
Explanation:
I don't have 1 sorry
Which of the following is true of science ?
Answer:Science is a systematic and logical approach to discovering how things in the universe work. ... True to this definition, science aims for measurable results through testing and analysis. Science is based on fact, not opinion or preferences. The process of science is designed to challenge ideas through research
Explanation:
Science is a systematic and logical approach to discovering how things in the universe work. ... True to this definition, science aims for measurable results through testing and analysis. Science is based on fact, not opinion or preferences. The process of science is designed to challenge ideas through research
What is the SI unit for mass
Answer:
Kilogram as I said in the comments.
Explanation:
Answer:
kilogram! abbreviation: kg
Explanation:
How many liters are in a cubic meter?
100,000
100
10.000
1,000
10
Answer:
The amount of liters in a cubic meter is 1,000 you can find it on google
Explanation:
Which of the following shows the levels of organization in correct order
from the simplest to the most complex? *
0 Organisms, cells, populations, molecules, ecosystems
Ecosystems, populations, organisms, cells, molecules
Molecules, cells, organisms, populations, ecosystems
O Molecules, organisms, cells, populations, ecosystems
Answer:
I think it's the second one but I'm not completely sure
The phrase “the danger is in the dose” is sometimes used when describing poisonous (toxic) chemicals. What does this mean?
The phrase “the danger is in the dose” means that sometimes it contains toxic chemicals too.
Poisonous (toxic) chemicals:The inorganic chemicals most commonly responsible for poisonings in the United States are cyanide, mercury, arsenic, and lead. While the last three often appear in chemical forms that are quite harmless, it is the soluble salts of the substances that are poisons. Cyanide is a dangerous substance in any form. Overdoses can happen at many opioid dose levels. For example, for instance if a patient drinks alcohol while on the medications, loses track of when they last took a dose, or takes more than the prescribed dose to handle a flare-up of pain.
Thus, we can say overdose can be the danger in the dose.
Find more information about Toxic chemical here: brainly.com/question/17011368
What is the density of a substance that has a mass of 90 g and a volume of 18 cm3?
Answer:
Explanation:
DENSITY = MASS( g)/ VOLUME (cm3)
= 90 g / 18 cm3
= 5g/cm3
be attentionto this note , that each 1cm3 =1ml
What are the characteristics of a substance that can be observed WITHOUT changing the identity of the substance?
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.
Answer: Physical Properties
Explanation:
8 mm =
Cm
What’s the answer to that???
Answer:
0.8 cm
Explanation:
If 1mm is 0.1 cm, then
8mm is 0.8 cm since 8 * 0.1 is 0.8
Which civilization linked Venus with motherhood and childbirth, and realized it was one object rather than two?
A. Aztecs
B. Mayans
C. Babylonians
D. Ojibwe
Answer:
The correct options is;
C. Babylonians
Explanation:
The Babylonians showed to have had knowledge that the Evening Star, which is the appearance of the planet Venus in the west, after sunset and the Morning Star which is the bright, white object that can be seen early in the morning in the Eastern sky are one and the same object as indicated in the middle of the seventeenth century BCE compiled Venus tablet of Ammisaduga.
Where does most of the mass of an atom come from? What parts of the atom make it up?
Answer:
nucleus
Explanation:
The majority of an atoms' mass comes from the protons and neutrons that make up its nucleus. Electrons are the least massive of an atom's constituent particles, with a mass of 9.11 x 10-31 kg and a size too small to be measured by current techniques.
1. What is Chemistry?
Answer:
The definition of chemistry is a branch of science that deals with the form of properties of matter and substances or the interaction between individuals.
Select all the correct answers.
Which of the following are considered pure substances?
element
compound
homogeneous mixture
heterogeneous mixture
Element and compound both are considered as pure substances.
Thus, both option 1 and 2 are correct.
What is a pure substance?Pure substances are defined as materials with a consistent chemical composition that cannot be physically separated through the use of techniques like filtration, evaporation, etc.
Anything that is made up of the same atom or molecule throughout is a pure substance. Everything else is a mixture.
Since elements are not physically or chemically broken down to generate simple, tiny entities like zinc, elements and compounds are pure substances. Furthermore, pure substances like water are combined to create compounds.
Both homogeneous and heterogeneous mixtures are not pure substances since they lack predetermined ratios and proportions, making it difficult to identify their exact composition.
Pure substances include sodium, water, a copper wire, an aluminum foil, etc.
Thus, elements and compounds both are categorised as pure substances.
To learn more about pure substances, refer to the below link:
https://brainly.com/question/11134780
#SPJ2
what is the best way to learn measurements and how to add and multipy them
Answer:
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Explanation:
Noah uses a thermometer to measure the temperature of some water as shown in the figure below.
What is the temperature on the Celsius scale?
Answer:
Whats the figure?
Explanation:
What is the density of the football?
g/cm3
Calculate the density of the football. Use the formula
D = m/V
where D is the density, m is the mass, and V is the
volume. Record your calculations in Table B of your
Student Guide.
Answer:
0.10
Explanation:
Answer in edge 2020
Answer:
0.10
Explanation:
Just did it
which family of elements can be found in the area marked B
A) Alkali earth metals
B) Halogens
C) Alkali metals
D) Oxygen family
Answer:
A) Alkaline Earth Metals
Explanation:
Area Marked A would be Alkali Metals
Area Marked B would be Alkaline Earth Metals
Area Marked C would be Transition Metals
Area marked H would be Halogens
Why can a container never be half full of air
PLEASE HELP I WILL HIVE YOU BRAINLYEST
Cirular movement of molecules rising up and sinking down is called
A. Coriolis effect
B. Wind movement
C. Convection movement
Are the numbers 76.48cm, 76.47cm, and 76.59cm accurate or precise
Answer:
accurate
Explanation:
what does 2 mean on MgBr2
Answer:
two means Br2
wat else................
Answer:
It means 1Magnesium and 2Bromine
what equipment is needed to weigh 5.0 grams of zinc?
Explain the general increasing trend in the first
ionization energies of the period 2 elements,
Li to Ne
Answer:
The general trend is for ionisation energies to increase across a period. In the whole of period 2, the outer electrons are in 2-level orbitals - 2s or 2p. ... That causes greater attraction between the nucleus and the electrons and so increases the ionisation energies.
Explanation:
The general trend is for ionisation energies to increase across a period. In the whole of period 2, the outer electrons are in 2-level orbitals - 2s or 2p. ... That causes greater attraction between the nucleus and the electrons and so increases the ionisation energies.
What is the data collected from the independent variable called
the measure of the number of units, such as atoms, molecules, or ions of which all matter is made
Answer:
Particles of matter.
Explanation:
In science, matter can be defined as anything that has mass and occupies space. Therefore, any physical object that is found on planet Earth is typically composed of matter.
Matter are known to be made up of atoms and as a result has the property of existing in states. The three (3) classical states of matter are;
1. Gas: is the state of matter in which the physical substance has no definite shape or volume and as a result fills all available space. Also, gases are easily compressible and can flow. Examples of gases are hydrogen, oxygen, argon, nitrogen etc.
2. Solid: is the state of matter in which the physical substance has a definite shape and fixed volume but not compressible. Examples of solids are pen, screwdriver, television, car etc.
3. Liquid: is the state of matter in which the physical substance can be poured and it takes the shape of its container. Also, liquids generally have a definite volume. Examples of liquids are urine, water, milk, blood etc.
Particles of matter can be defined as the measure of the number of units, such as atoms, molecules, or ions of which all matter is made. These particles of matter are typically tiny, minute or incredibly small and as such can not be seen with the naked eye. Also, the particles of matter are usually in a continual state of motion and are primarily held together by a bond energy.
Additionally, the four (4) properties that are peculiar to matter are: flow, volume, shape and compressibility.
What happens to the volume of a liquid when it is poured from a small container into a large container?
Answer:
it stays the same i think
Explanation:
When you light a match, there is a brief Smell that almost burns your nose
Answer:
Hdhgfrdf
Explanation:
Answer:
This is the smell of the smoke from the fire
Explanation:
The volume of water in a transfer pipette is 15.23 ml. A 6.7 mL
volume of water was then transferred out. Considering
significant figures, what is the new volume?
Answer:
The new volume of water in the pipette is 8.53 mL
Explanation:
The given information are;
The initial volume of water in the transfer pipette = 15.23 mL
The amount of water transferred from the pipette = 6.7 mL
The new volume of water in the transfer pipette is given as follows;
New volume of water in the pipette = Initial volume of water in the pipette - Volume of water transferred out
Therefore, we have;
New volume of water in the pipette = 15.23 mL - 6.7 mL = 8.53 mL
The new volume of water in the pipette = 8.53 mL
Answer:
8.5
Explanation:
15.23 - 6.7 = 8.53
The correct amount of sig figs would make the answer 8.5
Which civilization's largest contribution to world astronomy is the invention of astronomical tools?
A. Rome
B. Egypt
C. Babylon
D. Islamic Empires
Answer:
The answer is C.
Explanation:
Which of the following statements is an inference about the picture
The girl broke the vase.
The girl has blonde hair.
The vase is broken.
0 The girls' bow is blue and purple.
Answer:
there is no picture put it in next time
How to we know how many neutrons are in the atoms we draw models for ? (We represent average atoms, not ions or isotopes)
Answer:
Atoms is the smallest unit of a chemical element and consist of three main components protons, neutrons, and electrons.
The number of a neutron is based on the difference between the mass number of the atom (M) and the atomic number (Z). every isotope of an element has a different number of neutron.
But in a neutral atom or average atom, the number of neutrons is equal to the number of protons and the number of electron.
Example of the number of neutrons in an average atom: In Nitrogen-14, the atomic number and the number of protons is 7, it means the number of neutrons will also 7.
