Answer:
B. No more powder will dissolve in the water.
Explanation:
If a lot of powder is added to the water, then a fully saturated solution would be created. This means that no matter how much more powder is added or how strong the mix is shaken, no more powder will disolve. The powder will instead remain in solid form in the solution.
Answer:
Heat up the water first because it increases solubility of the powdered mix.
Explanation:
Took the test on Edg. Hope this helps!! :)
Determine the number of moles in a sample of calcium that contains 6.34 x 1022
atoms.
Answer:
0.105 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{6.34 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.105315...[/tex]
We have the final answer as
0.105 molesHope this helps you
help me i put max points
Answer:
D. Catastrophism
Explanation:
Answer:
Catastrophism is the answer :p lol
Explanation:
if the pH of a substance is 3.2, is it an acid, base, or neutral?
Answer:
It's acidic.
Explanation:
what is the formula for this bond?
hi does anyone know what the answer to this is? i really need help
Answer:
The answer is
H. Met, Val, Lys, Arg, Gin, Ser
Explanation:
Why is it important to pasteurize certain liquids?
Answer:
Pasteurization involves heating liquids at high temperatures for short amounts of time, it can make it better if you wanted hot cocoa but bad for milk
Explanation:
Answer:
Pasteurization kills harmful microbes in milk without affecting the taste or nutritional value
Explanation:
Which of the following measurements are recorded to three significant figures? Select all that apply.
Select one or more:
a. 0.003 L
b. 140 g
c. 1,610 s
d. 0.0890 m
Answer:
c) 1610 s
d) 0.0890 m
Explanation:
Significant figures:
The given measurement have four significant figures 1234.
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.
Zero between the non zero digits are consider significant like 104 consist of three significant figures.
The zeros at the right side when decimal point is present e.g 2400. are also significant. There are four significant figures are present.
a) 0.003 L
This measurement have 1 significant figure which is 3.
b) 140 g
This measurement have 3 significant figure 1, 4. In this measurement 0 is trailing zero that's why it is not consider significant.
c) 1610 s
This measurement have 3 significant figures 1, 6, 1.
d) 0.0890 m
This measurement have 3 significant figures 8,9 and 0
What is the mass of NaCl produced when 2.0 moles of chlorine gas
are reacted with excess sodium? The equation is given.
2 Na + Cl2 → 2 NaCl
Answer:
Mass = 234 g
Explanation:
Given data:
Mass of NaCl produced = ?
Moles of chlorine = 2.0 mol
Solution:
Chemical equation:
2Na + Cl₂ → 2NaCl
now we will compare the moles of NaCl with chlorine gas.
Cl₂ : NaCl
1 : 2
2.0 : 2/1×2.0 = 4.0 mol
Mass of NaCl;
Mass = number of moles × molar mass
Mass = 4.0 mol × 58.5 g/mol
Mass = 234 g
Students were asked to describe evidence of Plate Tectonic Theory. Their answers are listed
below.
Student 1: The shape of the continents suggests that they were once connected together.
Student 2: Similar fossils and rock formations have been found across different continents
providing evidence that they were once connected.
Student 3: Glacial evidence indicates that different
continents were once connected near the
South Pole.
Student 4: Magnetic rocks indicate that the sea floor has been growing and spreading over
time.
Which student(s) descriptions listed above accurately describe evidence supporting Plate
Tectonic Theory?
Answer:
One type of evidence that strongly supported the Theory of Continental Drift is the fossil record. Fossils of similar types of plants and animals in rocks of a similar age have been found on the shores of different continents, suggesting that the continents were once joined.
Explanation:
Students were asked to describe evidence of Plate Tectonic Theory.
descriptions listed above accurately describe evidence supporting Plate
Tectonic Theory. Student 3 describes "glacial evidence indicates that different continents were once connected near the South Pole."
What is plate Tectonic Theory?
The widely recognized scientific hypothesis known as plate tectonics states that the Earth's lithosphere was made up of many major tectonic plates that have already been gently migrating since around 3.4 billion years ago.
What is the South Pole?The south pole would be one of two locations on Earth's surface at which the planet's axis of rotation crosses it. It is often referred to as one of the Geographic south pole, Terrestrial South Pole, and 90th Parallel South.
The fossil record is such sort of evidence that has been used to support the Claim of Continental Drift. On the coastlines of many continents, fossils of specific kinds of plants, as well as animals have been discovered in rocks that are comparable in age, indicating that the continents had been connected.
Students were asked to describe evidence of Plate Tectonic Theory.
descriptions listed above accurately describe evidence supporting Plate
Tectonic Theory. Student 3 describes "glacial evidence indicates that different continents were once connected near the South Pole."
To know more about plate tectonic theory
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Is zinc radioactive
Answer:
nu
Explanation:
It has five naturally occurring stable isotopes. The most common stable isotope of zinc is Zn-64. Zn-64 has such a long half-life that it radioactive properties are virtually non-existant. ... Zinc is a hard metal, but becomes very malleable above 100 degrees Celsius.
Which of the following is a possible compound formed from Ca2+ and NO3-1?
F Ca2NO3
G Ca(NO3)2
H Ca3NO2
J CaNO
Answer:
Ca(NO3)2
.................
Ca(NO3)2 is a possible compound formed from Ca²+ and NO3-¹.
Ions, which are charged atoms of elements come together to form ionic compounds. A positively charged ion called cation reacts with a negatively charged ion called anion to form a neutral ionic compound i.e. compound with a charge of 0. In this question, cation Ca²+ reacts with anion NO3-. The ionic compound formed must have a net charge of 0. This can only happen if 2 moles of NO3- and 1 mole of Ca²+ is present in the compound. The resulting ionic compound can be chemically represented as Ca(NO3)2. Therefore, Ca(NO3)2 is a possible compound formed from Ca²+ and NO3-¹.Learn more at: https://brainly.com/question/11148793?referrer=searchResults
Why does the rate of dissolution for a gas decrease as the temperature of a solvent increases?
more space for the solute to escape
less space for the solute molecules
less space between solvent molecules
more collisions between solute and solvent molecules
Answer:
As the kinetic energy of the gaseous solute increases, its molecules have a greater tendency to escape the attraction of the solvent molecules and return back to the gas phase. As a result, the solubility of a gas decreases as the temperature increases.
Explanation:
Living Things and Energy
1. Identify one reason why all plants need energy.
A. to produce new cells and structures
* B. to absorb sunlight
C. to absorb oxygen
D. to release carbon dioxide
Try Again
What is Zeff of phosphorus
Answer:
Explanation:
Here is an illustration showing how to "calculate" +5 as the effective nuclear charge (Zeff) for phosphorus. We are not implying that the electrons are in orbits here, this is simply showing inner shell electrons that shield the outer valence electrons from the full nuclear charge.
We have that The effective nuclear charge Z_{eff} of 3p electron in phosphorus atom is discovered to be approximately 4.80
[tex]Z_{eff}=4.8[/tex]
It is important to note that the Z_{eff} of an element can be defined simply as the average positive charge felt by an shell electron in an atom from the various electrons around it
Hence
The effective nuclear charge Z_{eff} of 3p electron in phosphorus atom is discovered to be approximately 4.80
For more information on this visit
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Which has a higher frequency: microwaves or blue light? How do you know?
Answer:
Microwaves
Explanation:
Microwaves have more energy than blue light
Among microwaves or blue light, blue light has a higher frequency. This is because blue light belongs to the visible region has a short wavelength and produces a higher amount of energy.
What is the relationship between frequency and wavelength?The frequency of any wave is inversely related to the wavelength. This means that when the frequency of the wave increases, the wavelength decreases. While the relationship between frequency is directly related to the energy.
According to the context of this question, gamma rays have the highest frequency and shorter wavelength, while radiowaves have a shorter frequency and the highest wavelength.
Therefore, blue light has a higher frequency. This is because blue light belongs to the visible region has a short wavelength and produces a higher amount of energy.
To learn more about the Frequency of waves, refer to the link:
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Why is a synthetic gemstone (made by humans) not considered a mineral?
Answer:simce it’s manmade, it doesn’t have all the elements it needed if it was natural. It’s basically synthetic or artificial
Explanation:
What is the mass of 3.25 miles of AsF5
Answer:
169.913616 g/mol
Explanation: This is weight of AsF5 molecular weight
Which of the following would be the best soil for gardening?
A )A soil that is 35 percent sand, 30 percent clay, and 35 percent silt
B) A soil that is 10 percent sand, 80 percent clay, and 10 percent silt
C) A soil that is 5 percent sand, 20 percent clay, and 75 percent silt
D) A soil that is 85 percent sand, 10 percent clay, and 5 percent silt
Answer:
C
Explanation:
Silt is very benifical for plant growth. So the one with the most silt would be the best for gardening soil.
Answer: C
Explanation:
In nuclear fission, when the nucleus is hit the atom will ....what?
Answer:
When a large, fissile atomic nucleus such as uranium-235 or plutonium-239 absorbs a neutron, it may undergo nuclear fission. The nucleus splits into two or more lighter nuclei, releasing kinetic energy, gamma radiation, and free neutrons.
Explanation:
Why is it important to pasteurize certain liquids?
Answer:
Pasteurization involves heating liquids at high temperatures for short amounts of time. Pasteurization kills harmful microbes in milk without affecting the taste or nutritional value (sterilization= all bacteria are destroyed).
Explanation:
Metallic bonds are formed because valence clectrons are -
A. Fixed to each metal atom
B. Shared between many metal cations
Good day pleases help
Answer correctly please !!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!
if a substance has a large mass and a small volume what can you conclude about?
A. it has a low density
B. it is very dense
C. it is made out of rock or metal
D. it will float on water
Explanation:
this answer is a substance has large MS and small volume that are recover Council cute about his sister and brother it has a low distinguish inside incensed a substance is thick and warm
Nightmare Land Lab I’m very confused please help
Answer:
I can help and what are you confused about? pls hurry my lunch break will be over
Explanation:
Which of the following is the correct word equation for the reaction described below?
Calcium hydroxide and hydrogen gas are produced by the reaction of calcium hydride and water.
calcium hydride + hydrogen → calcium hydroxide + water
calcium hydride + water → calcium hydroxide + hydrogen
calcium hydroxide + hydrogen → calcium hydride + water
calcium hydroxide + water → calcium hydride + hydrogen
Explanation:
calcium hydride + water → calcium hydroxide + hydrogen
hope it helps!
Answer:
B
Explanation:
got it right on edg
Which type of bond will likely form between calcium and iodine?
ionic bond
polar covalent
non polar covalent
metallic
Answer:
ionic bond
Explanation:
cation calcium looses 2 electrons to bond with two iodine atoms to form CaI2 (Calcium Iodide)
Which are long chains formed by the process of polymerization?
1. subunits
2. ethylenes
3. monomers
4. DNA strands
Answer:
Monomers are long chains formed by the process of polymerization
Explanation:
Answer:
monomers is the correct answer....(C)
Explanation:
hope this helps, the person above me is correct
Weather can change from day to day, but does not
A. the Earth
B. climate
C. ali
D. the atmosphere
ANSWER climate
EXPLANATION climate is change in the weather pattern of a particular area for a longer period of time usually for a month or even year
Answer:
The answer is B: Climate
Explanation:
Just took the test
HELP ASAP
1. Where are hurricanes most likely to form?
a Over warm tropical waters
b Over frozen Arctic Waters
c Over a tropical rainforest
d Over cool Atlantic Waters
Answer:
Hurricanes are the most violent storms on Earth. They form near the equator over warm ocean waters. Actually, the term hurricane is used only for the large storms that form over the Atlantic Ocean or eastern Pacific Ocean. The generic, scientific term for these storms, wherever they occur, is tropical cyclone.
im going to guess the answer is A, sorry if im wrong.
hope this helps.