Explanation:
ionic compounds eg sodium chloride
covalent compounds e.gmethane
this sentence is wrong, correct it
a change in state involves a change in mass
Answer:
the answer is
Explanation:
A change in state involves a change in volume.
Scientists may design an experiment with a control group, which is a set of organisms or sam-ples that do NOT receive the treatment (the independent variable) that is being tested. Scientists can then compare normal changes in organisms or samples with those that might have occurred because of the treatment. The idea of a "control group" is not the same as a "controlled variable." Suppose a scientist is doing an experiment to determine the effect of a cancer drug on mice with lymphoma
Answer:
See explanation
Explanation:
I believe that the aim of the scientist is to determine the effect of a cancer drug on mice with lymphoma. In this experiment, the mice with lymphoma are exposed to the drug. This is the treatment in the experiment. A control group of mice having lymphoma is not exposed to this treatment, this is the control group. This control group establishes a baseline for the study.
By comparing the outcome of the experimental and control groups, the effect of a cancer drug on mice with lymphoma can be determined.
How many scientific methods are there?
Answer:
h
Explanation:
Answer:
I think its 8!
Explanation:
please tell me if I'm wrong :<
Read the water level with the correct number of significant figures.
1) 5 mL
2) 5.3 mL
3) 5.32 mL
4) 5.320 mL
5) 5.3200 mL
Answer:
the answereis is 5 ml
Explanation:
hope thhis helped.
If you are given 30.7g of sodium chloride and 12.6g of chlorine, how many grams of sodium do you have?
which system of the human body has a function similar to that of a vacuole inside a cell
Answer:
The stomach.
Explanation:
The vacuole is like the stomach because it stores food and water for later use. This allows the body and or cell to get energy when needed.
Pick the odd one out from the following.
Milk, Butter, Smoke , Carbon dioxide
1.Milk
2.Carbon dioxide
3. Smoke
4.Butter
plz answered fast
Answer:
Smoke
Explanation:
All of those listed are under the group of matter, except for smoke, making it the odd one one.
The rough definition of matter means that it occupies space, but smoke does not.
There are 3 main groups, Solid, Liquid and Gas.
Milk is classified under liquid.
Carbon Dioxide is classified under gas.
Butter is classified under solid.
Since you cannot classify smoke under any of the 3 categories, it is the odd one out.
This is how zirconium appears in the periodic table.
A purple box has Z r at the center and 40 above. Below it says zirconium and below that 91.22.
Rounded to the nearest whole number, how many electrons are in an atom of zirconium?
40
51
91
131
Answer:
40
Explanation:
I got a 100 on my quiz edg 2020 :)
Answer:
the answer is 40
Explanation:
i took the quiz
How many feet are in 3.2 miles
Answer:
16896
Explanation:
5280*3.2=16896
Answer:
The answer is 16896 feet.Explanation:
1 mile = 5280 feetor, 3.2 miles = 3.2 × 5280 feet =16896 feet. Therefore, the answer is 16896 feet. If you like this answer then mark this answer as BRAINLIEST answer.Thank you ☺️☺️
Which behavior is both territorial and used for courtship? (1 point)
Answer:
Display behavior or engaging in physical combats with other males
Explanation:
The behavior that both territorial and used for courtship is engaging in physical combats with other males because the male display and engage in physical combats with other males in order to attracts females as their mating partner or for courtship and also the male do this so as to secure their territories from Intruders and others taking over their own found territories. This normally occur in male lizards. The male like lizards have variants color on their skin, they display to attracts females and also to secure their territory.
What property of an element does the group number identify in a numbering
system that uses "A" and "B"?
A. The number of core electrons
B. The number of inner electrons
C. The number of valence electrons
D. The electrons closest to the nucleus
Answer:
C) the number of valence electrons
Explanation:
the group shows the valence electrons in the atom
eg. Na has one valence electron hence it belongs to group(I)
how does a study of a lion’s retina would provide evidence for lions not seeing colour
Answer:
Lions have fewer cones so see less colour but have great night vision especially since their eyes also have a membrane that concentrates weak light back to the retina and their pupils are able to enlarge to an extent much bigger than ours.
Hope this helps you out!
:)
The mass of an unidentified rock is 40 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table.
Answer:
A. Coal
Explanation:
[tex] Volume_{rock} [/tex] = water displaced by rock
Water displaced by rock = volume of water after rock is dropped into the cylinder - volume of water before the rock was dropped into the water
Water displaced by the rock = 180 ml - 150 ml = 30 ml
[tex] Volume_{rock} = 30 ml [/tex]
Density of rock:
40 grams => 30 ml
x grams => 1 ml
Cross multiply
1*40 = 30*x
40 = 30x
40/30 = 30x/30
1.3 = x
Density of rock = 1.3 g per 1 ml
Recall: 1 ml = 1 cm³
Therefore,
Density of the rock = 1.3 g/cm³
1.3 g/cm³ falls within the range of 1.1 - 1.4 g/cm³
Therefore, the rock is identified as Coal.
describe the electron arrangement of a chlorine atom
Answer:
1s22s22p63s23p5.
Explanation:
When we write the configuration we'll put all 17 electrons in orbitals around the nucleus of the Chlorine atom. In writing the electron configuration for Chlorine the first two electrons will go in the 1s orbital. ... Therefore the Chlorine electron configuration will be
why dont nobody love me ANSWER THAT
Answer:
god loves you i love u
everybody loves you
Which of the following structures demonstrates resonance? - HS Chem
Can someone please help me on numbers 6 and 7 please? Thank you!!!! :)
Answer:
6.b 7.c
Explanation:
i took the test in 6th grade
Which describes the normal boiling point of a substance?
A. The temperature at which the vapor pressure of a substance is greater than the air pressure at sea level.
B. The temperature at which the vapor pressure of a substance is less than the air pressure at sea level.
O C. The temperature at which the vapor pressure of a substance equals the air pressure at sea level.
D. The temperature at which the vapor pressure of a substance equals the air temperature at sea level.
Answer:
I think it's D
Explanation:
I'm so sorry if that's wrong, hope it helps!
The temperature at which the vapor pressure of a substance equals the air temperature at sea level. Therefore, the correct option is option D.
What is boiling point?The temperature at which a liquid's vapor pressure equals the pressure around it and the liquid transforms into a vapor is known as the boiling point of a material.
A liquid's boiling point changes based on the atmospheric pressure in the area. Lower pressure, or partial vacuum, results in a liquid's boiling point being lower than it would be under atmospheric pressure. The temperature at which the vapor pressure of a substance equals the air temperature at sea level.
Therefore, the correct option is option D.
To know more about boiling point, here:
https://brainly.com/question/28986258
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From the Data Tables Shown at the top of this section (Table 1-4). Which of the sets of data describes an object that is at rest.
Table 1
Table 2
Table 3
Table 4
Answer:
I’d say Table 4, because it stays as the same.
Explanation:
Please finish this
C3H8+5O2
Answer:
Below.
Explanation:
This is the combustion of the hydrocarbon propane.
C3H8 + 5O2 --> 3CO2 + 4H2O
Answer:
C₃H₈ + 5O₂ = 3CO₂ + 4H₂O
Explanation:
This is called a complete combustion reaction because CO₂ and H₂O are produced. To balance any equation, you have to make sure there is the same number of each element on both sides.
What is the melting point of human blood? (Not boiling point)
1535.1 degrees Celsius or 5000 degrees Fahrenheit
As particles in a convection current are heated up, what happens to their speed and density?
A.) Particles speed up and get closer together, making their more dense.
B.) Particles speed up and spread out, making them less dense.
C.) Particles slow down and spread out, making them less dense.
D.) Particles slow down and get closer together, making them less dense.
Answer:
As they rise, they transfer their thermal energy to other particles of the fluid and cool off in the process. With less energy, the particles move more slowly, have fewer collisions, and move closer together. This increases their density, so they sink back down through the fluid
Explanation:
Please help!
How does being made of many cells help large organisms maintain homeostasis?
Answer:
Explanation:
To maintain homeostasis, unicellular organisms grow, respond to the environment, transform energy, and reproduce. The cells of multicellular organisms become specialized for particular tasks and communicate with one another to maintain homeostasis. All body systems work together to maintain homeostasis.
Being made up of many cells helps large organisms maintain homeostasis as follows:
Cells act in a coordinated way in the organisms and they prevent changes in the environment from interfering with their functioning.
The existence of large complex organisms was only possible thanks to the evolution of an internal environment, whose physical and chemical conditions must be maintained at relatively constant levels, favorable for cells.
The cells were able to specialize in tasks that would help maintain specific aspects of the internal environment.
For example, some cells organized into tissues specialized in maintaining the balance of salt and water; others, in providing nutrients; while others, in maintaining appropriate levels of oxygen and carbon dioxide.
In addition, specialized tissues and organs form systems within the internal environment of the organisms.
For example, the digestive system that provides nutrients; while the cells related to the circulation, among other things, distribute oxygen and nutrients.
In this way, specialized cells and tissues must continuously correct the physical and chemical composition of the internal environment, so that it remains conducive to life.
The maintenance of relatively constant conditions in the internal environment is what is called homeostasis.
Therefore, we can conclude that being composed of many cells helps large organisms to conserve specific aspects of the internal environment to maintain its homeostasis.
Learn more here: https://brainly.com/question/3888340
What properties do you need to know to find the density of an object?
Answer: you need to know the Mass (grams) of the object, and its Volume (measured in mL or cm³). Divide the mass by the volume in order to get an object's Density. How can you tell if something will float in water?
Explanation:
Answer:
To find the density of an object you need to know the Mass (grams) of the object and its Volume. Divide the Mass by the Volume in order to get the object's density.
Good luck! Hope this helped :)
Is the chemical equation NH3(g)+O2(g)→NO(g)+H2O(l) balanced?
Answer:
yes
Explanation:
he model below shows a calcium atom.
An image has a mix of red and blue balls in its center and 4 concentric black rings around the center. The first ring from the center has 2 small green balls on it. The second ring has 8 small green balls on it. The third ring has 8 small green balls on it. The outermost ring has 2 small green balls on it.
How many electrons are in the third energy level?
2
8
18
20
Answer:
8
Explanation:
What are four ways to measure matter?
Weight, matter, density, volume
Density, atoms, viscosity, hight
Weight, mass, volume, density
Nucleus, neutron, electron, positive
Answer:
C
The answer is C pleaaaaaaase
How do particles move without energy from areas of higher concentration to areas of lower concentration?
A. by transportation
B. by osmosis only
C. by passive transport
D. by active transport
Answer:B
Explanation:
What is a limitation of using a chemical formula, such as CGH1206, to represent a compound?
The chemical formula does not show the types of elements that make up the compound
The chemical formula does not show how the atoms are connected to one another.
O The chemical formula does not show the number of atoms of each element in a molecule
The chemical formula does not show the chemical symbols of the elements in the compound.
Answer:
The chemical formula does not show how the atoms are connected to one another.
Explanation:
With a chemical formula, you can see the types of elements that make up the compound, the number of atoms of each element in a molecule, and the chemical symbols of the elements in the compound.
Nuclear symbol notation for hydrogen-1
Answer:
1H, 2H, and 3H.
Explanation: