Answer:
Its right
Explanation:
The chemical formula of calcium dichromate is CaCr207
Na: 1s22sC2p 3s
C=
D =
E =
Answer:
C = 2
D = 6
E = 1
Explanation:
just took the test :)
Which would be least helpful in reducing indoor pollution?
O A. Increasing airflow
B. Using all-natural cleaning products
C. Having house plants
O D. Having thick carpet
thick carpet!!!Answer:
Explanation:
just got right on quiz:)
To make a saturated solution, 30 g of sodium chloride is dissolved in 100 g of
water at 293 K. Find its concentration at this temperature.
Answer:
30%
Explanation:
As the formula for finding concentration
= (mass of solute/mass of solution)×100
= (30/100)×100
= 0.3×100
= 30%
The concentration is 30%.
How to find concentration?As the formula for finding concentration
= (mass of solute/mass of solution)×100
= (30/100)×100
= 0.3×100
= 30%
What is a concentration?
The amount of a substance, such as salt, is in a positive amount of tissue or liquid, along with blood. A substance turns into more concentrated whilst much less water is present.
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Please answer this it’s due tomorrow I’ll give you brainliest
Answer:
The answer is the last one
Explanation:
1. Give
2.me
3. Brainliest
4.please
Answer:
Explanation:
I’m not sure friend but my best guess would be 2 and 4. If it’s wrong I’m sorry but that seems the most reasonable to me. Good luck :)
A 30cm3 volume of water was placed in a cylinder, and a stone was dropped in. The water level rose by 35cm3. Is it true that the stone was 5cm3?
Answer:
The volume of stone is 5cm³.
Explanation:
Given data:
Volume of water = 30 cm³
Volume of water and stone = 35 cm³
Volume of stone was 5 cm³ = true or false
Solution:
To check weather the given volume of stone is true or not we have to calculate the volume of stone from given data.
Volume of stone = (volume of water + stone ) - volume of water
Now we will put the values.
Volume of stone = 35 cm³ - 30 cm³
Volume of stone = 5 cm³
Thus the given value is true. The volume of stone is 5cm³.
(1 Point)
How many atoms are there in 3.33 moles of strontium?
Answer:
every mole of anything contains Avogodro's number of atoms. So: 6.08x10^23 x 3.33 = ?
Explanation:
A B C The circles shown above represent three different elements. The six images below are mixtures, how many of the images represent homogeneous mixtures.
edit; found the answer, since no one answered is: 2. for anyone wondering.
Answer: 2
Explanation:
What are the total balance electrons?
PHOTO ABOVE
Answer: H2O has 8 electrons, GeBr4 has 32 electrons, and RbHO has 37 electrons.
Hope this helped! :)
what are electron configurations?
Answer:
In atomic physics and quantum chemistry , the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s 2 2s 2 2p 6, using the notation explained below.
Explanation:
i found it on google
Answer:
To calculate an electron configuration, divide the periodic table into sections to represent the atomic orbitals, the regions where electrons are contained. Groups one and two are the s-block, three through 12 represent the d-block, 13 to 18 are the p-block and the two rows at the bottom are the f-block.
Explanation:
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below.
3. DNA replication occurs:
a. During cell division
b. Continuously
C. Before cell division
d. Only once in the life of the organism
e. Only in gametes
Answer:
b
Explanation:
Round to 4 significant figures. 9.87553
Answer:
9.876
Explanation:
Fe(s) + O2(g) Fe3O2 (s)
Answer:
Fe2O3
Explanation:
if we have to answer whether it is wrong or correct then it is wrong because the correct answer would be Fe (s) + O2 (g) = Fe2O3 (s) because the valences will be exchanged
if you were conducting an experiment to see whether eating candy makes gerbils fat, what variable might you change?
A:The number of gerbils you feed incorrect answer
B:The amount of candy the gerbils eat incorrect answer
C:The amount of water the gerbils drink incorrect answer
D:The body mass of the gerbils incorrect answer
Answer:
B
Explanation:
the less candy will be the smallest gerbil and the most candy will be the fatest
Answer:
A) The number of gerbils you feed
Explanation:
If you wanted to test whether eating candy made gerbils fat you would need to fluctuate the amount of candy each group receives to observe whether there was any differnce in weight
+
The density of a liquid substance is 0.95 g/mL. Three students calculated the density as 0.56 g/mL. Calculate the percent error.
0 41.05 %
41.0 %
O 41.053%
O 41%
Answer:
The answer is 41.05 %Explanation:
The percentage error of a certain measurement can be found by using the formula
[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]
From the question
actual density = 0.95 g/mL
error = 0.95 - 0.56 = 0.39
So we have
[tex]p(\%) = \frac{0.39}{0.95} \times 100 \\ = 41.0526315...[/tex]
We have the final answer as
41.05 %Hope this helps you
A 300 kg computer cart accelerates at a rate of 5 m/s^2. What force is required to produce this acceleration?
Answer:
The answer is 1500 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × accelerationFrom the question we have
force = 300 × 5
We have the final answer as
1500 NHope this helps you
What is the difference between an atom and an element? a An atom cannot be cut into smaller, but an element is a group of atoms that are the same b An atom makes up matter but an element does not c An atom can be combined but an element cannot be combined d An atom can be cut apart but an element cannot
Answer:
c.
Explanation:
One of the main differences between an atom and an element is that an atom can be combined but an element cannot be combined. There are many combinations of atoms that make up different gases, liquids, and solids each with a unique makup. For example, water is made up of two hydrogen atoms and one oxygen atom (H20). Elements are made up of only the same type of atom. For example, the element Hydrogen can only contain hydrogen atoms, while the element Carbon can only contain carbon atoms.
The following are examples of physical properties EXCEPT
Group of answer choices
reaction with oxygen
magnetism
electrical conductivity
boiling point
Answer:
color (intensive)
density (intensive)
volume (extensive)
mass (extensive)
boiling point (intensive): the temperature at which a substance boils.
melting point (intensive): the temperature at which a substance melts.
(WILL GIVE BRAINLIEST TO BEST ANSWER) What might a weak acid do to a rock?
When water combines with carbon dioxide in the atmosphere, it will form carbonic acid, which is a weak acid. If this weak acid comes in contact with a rock, it will cause some of the rock to be dissolved. This process can also be referred to as weathering.
What happens immediatesly after you dissolve acid in water? Positively charged hydrogen atoms are released. Positively charged hydrogen atoms are released. Negatively charged hydrogen atoms are released. Negatively charged hydrogen atoms are released. Hydronium ions are released. Hydronium ions are released. Neutrally charged hydrogen atoms are released. Neutrally charged hydrogen atoms are released.
Answer:
The correct answer is A.
Explanation:
The acids with hydrogen atoms in them are the ones that dissolve best in water and when they do, they get diluted, raising their pH level by releasing hydrogen ions (H+) into the solutions.
So when acids get dissolved in water, positively charged hydrogen atoms are released.
The answer is A.
I hope this helps.
[
An atom, which is an isotope of an element, is characterized by -
O having more electrons in its nucleus.
O having more neutrons in its nucleus.
having fewer protons in its nucleus.
having more protons in its nucleus.
Answer:
gime fre points
Explanation:
fre points for me!
1. Or what is the steering of a vehicle an example?
i Pulley
ii. Wedge
iii Wheel and axle
iv. First class lever
Answer: Wheel and axle
Explanation:
Wheel and axle is the best answer. Technically that's not the primary part that steers a vehicle though. A pulley is in the engine and I've never heard of wedge and first class lever. The question isn't too clear, but yea, I would pick ii if I was in your spot.
F. A rigid steel cylinder has a volume of 20.0 L. It is filled with N2 gas to a final pressure of 205 atm at 27.0 S. How
many moles of N2 gas does the cylinder contain?
Answer:
don't know this but going to figure out
True or False : Scientists know perfectly and exactly every single thing about the Universe’s birth, and there is nothing left to discover
Answer:
False
Explanation:
The Universe's birth is only a theory. The theory has changed over the years, but currently the most believed theory is the Big Bang Theory. Also, there is always more to discover
based on your observation, you can infer that thermal energy transfers to/from objects with higher temperatures to/from objects with lower temperatures
Answer:
1. from 2. to
Explanation:
what is the density of a man
Answer:
1.0 g per cubic centimeter.
Explanation:
Which of the following can be inferred from the diagram above that shows the dependence of potential Energy on the Internuclear distance between two atoms?
A - The atoms form a bond with a bond length of 25 pm
B - The atoms form a bond with a bond length of 75 pm
с - The net force between the atoms is attractive at 25 pm
D - The net force between the atoms is attractive at 75 pm
Answer:
B - The atoms form a bond with a bond length of 75 pm
From the potential energy diagram of shown, we can infer that the atoms form a bond with a bond length of 75 pm.
When atoms are far away from each other, there exists no interaction whatsoever between the atoms.
However, as the atoms draw closer to each other, the potential energy diagram begins to shift towards an energy minima as we can see from the potential energy diagram.
As the system continues to tend towards this minima, the distance between the atoms decreases. The distance at which the two atoms have the lowest energy is called the bond length.
For this system, such a bond length occurs at 75pm as we can see from the diagram.
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Fill in the blank.the amount which an object accelerates depends on the mass of the object on the size of the ____ acting upon it
I need help I’m struggling
Answer: Force
Explanation:
Answer:
force
Explanation:
What is the wavelength of a radio wave with a frequency of 3.1 X 106 Hz?
Answer:
Assuming that the frequency of a wave is 3 multiplied to 109 Hertz, then we use wave velocity over frequency. Therefore, 327 Hertz has a wavelength of approximately 917 kilometers and has a velocity of at least 300,000 kilometers per second
Explanation:
hope it helps give cronw ples
5. What kind of crust is involved in picture D?
Explakjbkhbjhbjnatip[ok[okoon:
[tex]\sqrt[n]{x} \int\limits^a_b {x} \, dx \geq x^{2} \sqrt{x} \neq \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \pi \sqrt[n]{x} \frac{x}{y} \alpha \beta x_{123} \\ \leq \left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx \int\limits^a_b {x} \, dx \geq \geq \geq \geq x^{2} x^{2} x^{2} \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\rig[/tex]
3
Which of the following does not affect the gravitational force
between the earth and the sun
A
The mass of the earth
B
The mass of the sun
с
The distance between the earth and the sun
D
The net electrical charge of the earth
Answer:
D. The net electrical charge of the Earth.
Explanation:
I remember from middle school. The other three options affect the gravitational force.
The gravitational force between the earth and the sun is dependent on the mass of these two objects as well as the distance between the earth and the sun. Thus, option D is the correct answer.
Why is gravitational pull important?Gravitational pull is referred as a force of attraction beared by the planetary objects. Gravity is responsible for the revolution of planets around the sun in their fixed orbits.
Gravitational pull is important as it keeps the earth revolving around the sun from a safe distance. It holds the earth in position and thus supports the life on earth. Gravity is responsible for optimum atmosphere on earth.
The formation of celestial bodies is also under the influence of gravitational pull. Gravitational force thus is consired as a fundamental force that govers all the celestial bodies.
Gravitational pull is therefore important for the life on earth.
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