Answers
Answer:
the answer is: 10
Explanation:
To find density you do mass divided by volume
Related Questions
the basic unit of matter is know as a(n)
a. atom
b.cell
c. element
d. compound
Answers
Answer:
a. atom
Explanation:
A student sets up an experiment to test the factors that affect the
solubility of sodium chloride. The student places 5.Og of sodium chloride in
four beakers containing 250 mL of water. The student places each beaker
on a different hot plate and heats them to the following temperatures:
Beaker A: 30°C, Beaker B: 40°C, Beaker C: 50°C, Beaker D: 60°C. In which
beaker would the sodium chloride dissolve at the fastest rate? *
Beaker A
Beaker B
Beaker C
Beaker D
Answers
Answer:
Beaker D
Explanation:
Since Sodium Chloride melting point is 1,474°F (801°C) the logical possible answer would be D: 60C.
The least massive of all the alkaline earth metals. Who
am I?
Answers
Chased on atomic mass, the least massive of the alkaline earth metals is Beryllium.
What are alkaline earth metals?Alkaline earth metals are the metals found in group 2 of the periodic table of elements.
The alkaline earth metals include:
Beryllium Magnesium CalciumThe least massive is the first element in the group.
Therefore, the least massive of the alkaline earth metals is Beryllium.
Learn more about alkaline earth metals at: https://brainly.com/question/1085966
Convert the following: 4.6L(liters) to ml(milliliters).
a. 0.46 ml
b. 46 ml
c. 46,000 ml
d. 4600 ml
Answers
Answer:
D
Explanation:
Answer:
D
Explanation:
1000 mL = 1 L
so
1000 × 4.6 = 4600
I don’t know how to do thos
Answers
Answer:
75,000,000,000,000,000,000
Explanation:
7.5e+19 (7.5*10^19)
Please can i have help on these two multiple choice questions.I’ll be so grateful!!!
Answers
Answer:
1(neutrons) 2(protons)
Explanation:
Gold atoms can be identified based on the number of which subatomic particles?
A.neutrons
B.electrons
C.nuclei
D.protons
Answers
Answer:
D.protons
Explanation:
Gold is a chemical element and it is the element 79 on the periodic table. Thus, it has an atomic number of 79. The chemical symbol for Gold is Au, it is chemically classified as a transition metal and as a solid at room temperature.
Generally, the chemical element Gold is known to be malleable, ductile and a good conductor of electricity and heat. Also, it is a non-toxic chemical element with a beautiful lustrous sheen.
Gold atoms can be identified based on the number of protons (79) because it represent its atomic number, which is what is used to differentiate an atom of an element from the atom of another chemical element.
Molten steel is poured into molds to make car parts and then allowed to cool and harden. This is an example of –
A. Physical change
B. Physical property
C. Chemical change
D. Chemical property
Answers
Answer:
A. Physical Change
Explanation:
Physical change is a type of change in which no new substance is formed, change of state can occur, the appearance of matter can be altered but not its chemical component.
Molten steel being poured into molds to make car parts and then allowed to cool and harden is an example of Physical change because;
- A change of state only occured from molten steel to solid steel.
- No new substance is formed.
Two scientists write a paper detailing their research and conclusions and submit it to a scientific journal. Several
months later, the publisher sends them back the paper. Many comments from several fellow scientists are attached.
Which step will the authors of the paper most likely take next?
They will change their research to a different topic and start all over again
O They will alter the data to match the results that their peers were expecting.
O They will incorporate the suggestions from their peers and resubmit the paper.
They will sue the journal for delaying their research and not printing the paper
Answers
Answer:
C
Explanation:
I just took the test
Answer: They will incorporate the suggestions from their peers and resubmit the paper.
Explanation:E 2022
What happens when the number of particles in an atom is changed
Answers
Answer:
When the number of particles, though in this case I think you mean (electrons), changes in an atom....it become an ion. Ions are atoms that were chnaged by losing or gaining an electron. If an atom gains an electron it will have a negative charge. If an atom loses an electron it will have a positive charge. Hope this was helpful!!
Explanation:
Answer the following question.
Answers
Answer:
B) The north and south Poles
Explanation:
when dealing with magnets they have a negative and Positive charge on their south and north poles. Negative attacks with positive and positive with negative so both poles on each magnet should react to each other
When paper is burned, the mass of the remaining ash is less than the mass of the original paper.
Which statement best explains this result?
0 The ash has less volume than the paper.
O Some of the matter is destroyed during the reaction.
O The mass of the ash cannot be accurately determined.
O Some of the products of the reaction were given off as a gas.
Answers
When paper is burned, the mass of the remaining ash is less than the mass of the original paper because Some of the products of the reaction were given off as a gas.
The postulate of the law of conservation of mass is that mass can not be created or destroyed rather it can be transformed from one form to another.
This means that when ash is left behind after burning paper, the total mass should be the same as was obtained before combustion but it rather weighs less than paper itself. This should never be interpreted to mean that mass was "lost".
Here is what happens, paper is an organic material and burning it in air yields CO2 gas which escapes into the atmosphere. This explains why; when paper is burned, the mass of the remaining ash is less than the mass of the original paper.
Learn more: https://brainly.com/question/13048470
electronegativity of argon element
Answers
Answer:
argon is 18 2-8-8 since it has octet circle and fully stable you can say it has no electro negativity
Is water an element?
a:yes
b:We can't tell from a periodic table
c:No
Answers
Answer:
no it is not. The name refers to the chemical formula of water H20 so water is made from elements, but is not itself an element
Which element is a liquid at 1000.K
Answers
Answer:
silver?
Explanation:
How cab yout knowledge about solutions help improve health or the quality of life? In what practical way can you use your knowledge about it?
Answers
Answer:
Here are possible ways to improve health and quality of life:
-Exercise almost everyday
-Be more positive
-Get rid of bad habits
-Start good habits
-Get new things
-Learn New things
Which one of the following is an alkane?
A. C2H4
B. C5H10
C. C3H8
D. C4H6
Answers
Hello
Answer:
C. C3H8
what do small numbers of 12,22, and 11 stands for in C12H22O11
Answers
Answer:
The number of each element in the molecule.
Explanation:
C₁₂H₂₂O₁₁ is one molecule, and it is made 3 elements carbon, hydrogen, and oxygen. There are 12 carbons, 22 hydrogens, and 11 oxygens. If these numbers were different, it would be a different molecule.
The melting point of chromium is 1890. The melting point of argon is -189. Suggest a reason for this difference.
Answers
Answer:
Different forces between atoms and difference in structure.
which character of Life distinguishes a fire and a flowering plant
Answers
Answer:
a flowering plant needs water while a fire doesn't.
That what I guessed???
1)The thermostat on your hot water heater is raised 2 degrees celcius. If your hot water heater holds 400,000g of water, how much heat energy is used up to heat the tank?
2) The temperature of 50g of water was raised to 60c by the addition of 1.5 kJ of heat energy. What was the initial temperature of the water?
3) How much heat is released when 23.00g of water vapor condenses in a cloud to form raindrops?
4) How many joules of heat energy did the sun provide, of a 150 g patch of ice is melted
Answers
Explanation:
7erhsigusiskjkurfnkldowustehwoostfsjsozdtshalsoxttensiuxdnslc icy rbkedlxt
3. An object has a mass of 20.0 grams and a volume of 5.0 cubic centimeters. Give the
density
Answers
density= mass/ volume
d= 20/5
d= 4 g/cm^3
The explanation that includes scientific principles (key concepts) is the...
A. Claim
B. Evidence
C. Reasoning
Answers
Answer:
B. Evidence
Explanation:
is this correct please help?
Answers
Answer:
[tex]\boxed {\tt Number \ and \ unit}[/tex]
Explanation:
The two requirements for a measurement are a number and a unit.
For example, here is a measurement:
38.6 cm
The number is 38.6 and the unit is cm, or centimeters.
Therefore, both number and unit are correct.
2. Predict which food sample you think has the most stored energy
Explain.
Type your answer here.
TT
B 1
IC
Answers
Answer:
carbohydrate yam rice
Patrick did an experiment to study the solubility of two substances. He poured 100 mL of water at 20 °C into each of two beakers labeled A and B. He put 60 g of Substance A in the beaker labeled A and 60 g of Substance B in the beaker labeled B. The solution in both beakers was stirred for 1 minute. The amount of substance left undissolved in the beakers was weighed. The experiment was repeated for different temperatures of water and the observations were recorded as shown.
Experimental Observations
Substance Mass of Undissolved Substance at Different Temperatures (gram)
20 ° 40 ° 60 ° 80 °
A 18 14 10 5
B 60 60 60 60
Part 1: Which, if any, substance is soluble in water?
Part 2: Explain how the data helped you determine solubility for both substances for temperatures 20 °C to 80 °C.
Answers
Answer:
1. SUBSTANCE A IS SOLUBLE IN WATER WHILE SUBSTANCE B IS INSOLUBLE IN WATER.
Looking at the information given in the question about the two substance, you will discover that 60 g of both substances were initially put in the beaker. While the mass of undissolved substance for substance A is variable, that of substance B remain constant at 60 g, this shows that the substance is not soluble in water.
2. Looking at the two substances given in the question, you will observe that for substance A, the degree of solubility in water decreases as the temperature of the water increases. For instance, at 20 degree Celsius, the mass of undissolved substance is 5 and as the temperature increases to 40, 60 and 80 degree Celsius, the mass of undissolved substances also increase to 10, 14 and 18 respectively. This shows that, the higher the temperature, the less of the substance will dissolve. For substance B, the mass of undissolved substance remain constant at all temperatures, which shows that the substance is insoluble in water. Thus, the data given helps to determine the solubility of the substance by giving the amount of substances that are insoluble at each temperature.
Explanation:
Which of the following statements incorrectly describes the assumptions of the kinetic molecular theory? Group of answer choices The particles that make up a substance have differing amounts of kinetic energy. Matter is composed of very small particles. Based on the state of matter a substance is in, it has varying particle arrangement. Particles stop moving completely when they are very cold.
Answers
J vre fdtnyscdvf. H Fr,I
Answer: B- Matter is composed of very small particles.
Explanation:
a. The particles that make up a substance having different amounts of kinetic energy.
b. Matter is composed of very small particles.
c. Based on the state of matter a substance is in, it has varying particle arrangement.
d. Particles stop moving completely when they are very cold.
The assumptions of KMT:
- Molecules are in constant random motion.
- They undergo elastic collisions; other than collisions.
- Particles do not interact with each other.
- The distance between particles is large compared to their size.
A, C, and D all have something similar to the assumptions that I have listed. B is something completely random and unrelated. (As far as KMT goes.)
Use the periodic table to select the element that best fits each of the following descriptions. Halogen:
fluorine
scandium
hydrogen
answer is fluorine
Answers
Answer: fluorine
Explanation:
Answer:
fluorine on edge 2020
Explanation:
hope this helped:)
Please Help ASAP! View Attached Pictures. I don't understand this.
Answers
Answer:
Answers with the explanation.
Explanation:
Surprisingly all of the answers were C for some reason:
14. C (Extensive Properties include mass, volume and length)
15. C (Boiling/Melting/Freezing point are examples of physical change)
16. C (Malleability is how bendable an object is, therefore a physical change)
17. C (For Example, Water only forms Water Vapor when it´s heated up)
Answer:
1.F
2.A
3.C
4.E
5.B
6.D
7.B
8.F
9.A
10.E
11.D
12.C
13.B
14.C
15.C
16.C
17.C
Explanation:
How have batteries gotten better over time
Answers
Answer:
Yes they have gotten better overtime
Explanation: