Answer: I don't know try your best
Explanation:
You find a ring with a mass of 89.2g. You fill a graduated cylinder up with 10mL of water
and put the ring into the cylinder. The water mark rises up to the 20mL mark. What is
the ring made of
Solids
Table of Densities
Density g/cm
Solids
2.56
Copper
264
Gold
Density g/cm
8.92
Marble
19.32
Diamond
3.52
Platinum
21.4
O Marble
O Quartz
Copper
Gold
Answer:
Ring is made up off copper.
Explanation:
Given data:
Mass of ring = 89.2 g
Volume of water = 10 mL
Volume of water + ring = 20 mL
Ring is made up of = ?
Solution:
Volume of ring = (Volume of water + ring) - Volume of water
Volume of ring = 20 mL - 10 mL
Volume of ring = 10 mL
Density:
Density = mass/volume ( 1 mL = 1 cm³)
d = 89.2 g/ 10cm³
d = 8.92 g/cm³
Thus, ring is made up off copper.
WILL MARK BRAINLIEST!!
Use complete sentences to differentiate between acids and bases on the basis of their behavior when dissolved in water. Give an example of each type.
Please be simple and original....DONT PLAGIARIZE PLEASE!! 50 points!
Answer:
acids and bases cancel each other out. acids increase H+ ions while bases release H+ ions
Explanation:
If you were going 50 mph how fast are you traveling in meters per second?
Answer: Um pretty sure it is 22.35 m/s
1). Take your current speed in either kmph or mph.
2). Divide it by 60 to get kilometers per minute or miles per minute.
3). Divide by 60 again, getting kilometers per second or miles per second.
And der you go.
classify the following characteristics and examples of molecules depending on whether they are organic or inorganic.
Organic compounds;
Carbohydrates lipids and nucleic acidscontained in living organisms Molecules that contain carbon and hydrogen bondsInorganic molecules;
Sometimes contain carbon but do not contain C-H bonds Molecules made of a combination of elements Water and table saltsWhat is an organic molecule?An organic molecule are the molecules that contain long chains of carbon and are studied as part of organic chemistry. Inorganic compounds do not contain catenated carbon chains and are studied as part of inorganic chemistry.
Let us now classify the compounds;
Organic compounds;
Carbohydrates lipids and nucleic acidscontained in living organisms Molecules that contain carbon and hydrogen bondsInorganic molecules;
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chemistry 10th grade PLEASE really need these answers :(
A.In a chemical reactions, substances after the arrow are called ________.
C2H4 + O2 → CO2 + H2O
1 products
2 reactants
3 no answer text provided
4 chemicals
B.In this reaction: sodium + water -> sodium hydroxide + hydrogen gas
which substances are the reactants?
1 hydrogen gas
2 sodium hydroxide + hydrogen gas
3 sodium + water
4 sodium hydroxide
C. This is an example of what type of reaction?
Mg + Fe2O3 → Fe + 3 MgO
1 decomposition
2 double replacement
3 single replacement
4 synthesis
5 combustion
D. This is an example of what type of reaction?
Ca(OH)2 + Al2(SO4)3 → CaSO4 + Al(OH)3
1 synthesis
2 decomposition
3 double replacement
4 combustion
5 single replacement
E. This is an example of what type of reaction? PbSO4->PbSO3 + O2
1 single replacement
2 combustion
3 double replacement
4 synthesis
5 decomposition
F. This is an example of what type of reaction?
C2H4 + O2 → CO2 + H2O
1 single replacement
2 double replacement
3 synthesis
4 decomposition
5 combustion
Answer:
I hope this helped you.
Explanation:
A: 1
B: 3
C: 3
D: 3
E: 5
F: 5
animal cells do not have a cell wall. why is this advantage for these eukaryotes ?
Which has a higher melting point KF or KI?
Answer:
kf
Explanation:
A 9.95 L balloon is filled with water at 1.29 atm. If the balloon is squeezed into a 0.26 L beaker and does NOT burst, what is the pressure of water in the balloon?
Answer:
P₂ = 2.4 atm
Explanation:
Write a caption for a photo of a polluted city.
Answer:
ok
Explanation:
this is a picture of a city that we have made worse everyday
Plz help I need to bring up my grade, this will help bring up my grade !!!!!!!
Answer:
WHY: You can abbreviate an element's electron configuration using the noble gas notation method because when you get down to the lower elements, specifically the d's and the f's, the electron configuration will be very long. The noble gas notation method is a faster answer while also being correct.
HOW: We can abbreviate an element's electron configuration by finding the last noble gas a specific element passed, for example calcium would have just passed Argon. Once you have the "address" of the previous noble gas, then you add on the difference between the element chosen and the noble gas, for example calcium would be [Ar] 4s^2.
Explanation:
PLEASE HELP DUE TODAY !!
What makes up most of an
atom's mass, and where is it located in the atom?
rank the following element in increasing order for the atomic radius ne , na , p , al
Answer:
oxygen, carbon, aluminum, potassium
For the reaction 2H2 + O2 - 2H20, how many grams of water are produced from 3.00 mol of hydrogen?
Consider the unbalanced equation for the oxidation of butene. C4H8 + 6O2 Right arrow. CO2 + H2O For each molecule of C4H8 that reacts, how many molecules of carbon dioxide and water are produced? Group of answer choices 2 CO2 & 2 H2O 4 CO2 & 4 H2O 2 CO2 & 4 H2O 4 CO2 & 2 H2O
0.0278, how many significant figures
Answer:
There are three significant figures
Explanation:
When counting sig figs you don't count the zeros unless it is between a number greater than zero. The two zeros aren't between the greater numbers so there are only 3.
What group would this element be in?
The Hawaiian islands are a unique chain of islands because they are not
located near a plate boundary. What created this chain of islands?
Answer:
yes its the correct one like bruhh find out ur self nah jk have a good day
Explanation:
N2 + 3H2, -> 2NH3
If I have 50.6 L of N2 and excess H2, how many liters of NH3 can I produce?
Answer:
C. 101.2 L
Explanation:
N2 + H2= NH3
Balancing it,
N2 + 3 H2 = 2.NH3
(1 mol) (3 mol) (2 mol)
which means
1 molecule of nitrogen reacts with 3 molecule of hydrogen to form ammonia.
Likewise,
50.6 l of nitrogen reacts with 50.6 × 3= 151.8 l of hydrogrn to form 50.6 × 2= 101.2 l of ammonia.
an empty beaker weighs 34.49 g. when completely filled with water, the beaker and its contents have a total mass of 299.25 g. what volume does the beaker hold? use ????
An empty beaker weighs 34.49 g. when completely filled with water, the beaker and its contents have a total mass of 299.25 g. Volume does the beaker hold 264.76 mL.
Equation :mass of water = total mass - mass of beaker
mass of water = 299.25 g - 34.49 g
mass of water = 264.76 g
density of water = mass / volume
volume = mass / density
V = 264.76 g / 1.00g/mL
V = 264.76 mL
What is mass ?A physical body's overall composition is measured by its mass. This term also measures inertia, or the body's resistance to acceleration when a net force is applied. The strength of an object's gravitational pull to other bodies is also influenced by its mass. The kilogram serves as the SI's fundamental mass unit.
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the melting point of scandium fluoride is 1552°c, explain why scandium fluoride has a high melting point.
Answer:
Scandium(III) fluoride, ScF3, is an ionic compound. It is slightly soluble in water but dissolves in the presence of excess fluoride to form the ScF63− anion.
hope it will help you......
A high melting point is caused by a high fusion heat, a low fusion entropy, or a blend of the two. The crystal phase of highly symmetrical molecules is densely packed with many efficient intermolecular interactions, resulting in a higher enthalpy change on melting.
What is intermolecular force?An intermolecular force is a force that mediates the interaction of molecules, including electromagnetic forces of attraction or repulsion that act between atoms and other types of neighboring particles, such as atoms or ions.
The intermolecular forces can be in order of strength, ion-dipole, hydrogen bonding, dipole-dipole, and Van der Waals forces.
Because it is the power of attraction or repulsion between atoms or molecules rather than the ability to share or give/take electrons.
ScF3, or Scandium(III) fluoride, is an ionic compound. It is only slightly soluble in water, but in excess fluoride it dissolves to form the ScF63 anion.
Thus, due to the strong intermolecular forces, it have high melting point.
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all matter can be classified as either a pure substance or a mixture classify each of the following as to whether it is a substance or mixture. if it is a mixture, write element or compound in the substance column. if it is a mizture write heterogenous or homogenous in the mixture column
All the given mixtures are classified as heterogenous and homogenous mixture in the image given below:
A mixture is composed of one or more pure substances in varying composition. There are two types of mixtures: heterogeneous and homogeneous. Heterogeneous mixtures have visually distinguishable components, while homogeneous mixtures appear uniform throughout.
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Help please. Will give brailiest
Answer:
i dont have a answer im just answering so you can give the person who answered brailiest :)
Explanation:
Which of the following accurate describes the atmospheric conditions required for the formation of clouds
Answer:
To make a cloud, air needs only to be cooled to saturation and beyond. ... Usually the water vapor amounts in air are less that this amount. When this is the case, we describe the air as being unsaturated. If we add more vapor to such air, we could reach the maximum for the temperature
Explanation:
The atmospheric conditions required for the formation of clouds are , air needs only to be cooled to saturation and beyond formation of clouds and precipitation.
What is precipitation?
Precipitation is defined as any liquid or frozen water which forms in the atmosphere and then gets received on Earth.It is one of the most important steps of the water cycle.
Precipitation takes place in form of clouds when water vapor gets accumulated in clouds and they get bigger and heavy, when the clouds become heavy enough they fall to the land in the form of rain.f a cloud is present at higher altitudes , the water present in the clouds freezes and fall to the ground in form of snow,hail.
Precipitation occurs always in case of fresh water because the sea salt does not evaporate with the water.The different types of precipitation are rain, drizzle,snow,snow hail,etc.
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alculate the molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution.
The molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution is 2.3 M.
What is Molarity?Molarity is defined as the ratio of number of moles of solute to the volume of the solution.
Molarity = number of moles of solute/ Volume of solution
Given,
given mass of sodium hydroxide= 20 g
Volume of the solution = 200 mL.
Firstly, we will calculate the moles of sodium hydroxide.
What is Mole?Mole is defined as the ratio of given mass of substance to the molar mass of substance.
Mole = given mass/ molar mass
Molar mass of sodium hydroxide = 40 g
Mole = 20/40
= 0.5 mol
Molarity = (0.5/ 200) × 1000 = 2.5M
Thus, we calculated that the molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution is 2.3 M.
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Why did scientists undertake the Human Genome Project?
Answer:
Primary goals were to discover the complete set of human genes and make them accessible for further biological study, and determine the complete study of DNA cells in the human genome.
Explanation:
Scientists undertake the Human Genome Project to provide researchers with powerful tools to understand the genetic factors in human disease, paving the way for new strategies for their diagnosis, treatment and prevention.
What is Human Genome Project ?The Human Genome Project was an international scientific research project with the goal of determining the base pairs that make up human DNA, and of identifying, mapping and sequencing all of the genes of the human genome from both a physical and a functional standpoint.
The main objective was to discover the complete set of human genes and make them accessible for further biological study, and determine the complete sequence of DNA bases in the human genome.
Hence, Scientists undertake the Human Genome Project to provide researchers with powerful tools to understand the genetic factors in human disease, paving the way for new strategies for their diagnosis, treatment and prevention.
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What is the compound name of phosphate ?
Answer:
Phosphate, any of numerous chemical compounds related to phosphoric acid (H3PO4).
*
How many molecules are in 12.5 g of NaCl?
Answer: 0.7 moles
Explanation:
Explain with 3 points why the element Ra is bigger than the element Be.
Answer:
1. it has more valence shells
2. its position in the periodic table is lower than Be
3. its bigger in atomic mass
Explanation:
=)
How many moles are in 98.3 grams of NaF?
Answer:
1 mole is equal to 6.022x10²³
Answer:
2.979 mol
Explanation:
mass of NaF=14+19
=33g
33g of NaF is the mass of 1 mol
98.3g of NaF is the mass of (98.3/33)*1=2.979 mol
How does altitude affect the freezing, melting, and boiling points of water?
Answer:
At higher altitudes, air pressure is lower. When atmospheric pressure is lower, such as at a higher altitude, it takes less energy to bring water to the boiling point. Less energy means less heat, which means water will boil at a lower temperature at a higher altitude.
In an ordinary container (exposed to atmospheric pressure). The freezing point will increase with altitude (and corresponding decrease in atmospheric pressure), but the difference is very slight.
Explanation:
When at a higher altitude , the atmospheric pressure is usually low and it
requires lesser amount of energy for the water to reach its boiling point. This
means that at higher altitudes , water boils at a lower temperature.
The freezing point of water increases with a higher altitude. This means that
water freezes at a higher temperature although the difference is very small.
The low pressure present in higher altitudes increases the melting point of
water(ice)
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