Amino Acids is your answer
How many grams of water are produced from 0.198 grams of nitric acid?
2HNO3+Mg(OH2) = Mg(NO3)2+2H2O
Answer:
2+2H2O.We already learn it
How many chemical changes can something go through
Answer:
Only one
Explanation:
Which of the following is an example of the reflection of waves?
A)getting a sunburn
B)Your image in a mirror
C)light through the sunroof of a car
D)The movement of a sailboat
Answer:
C
Explanation:
The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected.
i’ll give Brainliest please answer also i know this isn’t chemistry but brainly doesn’t have science
the answer would be iron. divide mass by volume to get density.
Answer:
B. Iron
Explanation:
Correct
Two plastic containers are washed in a dishwasher. One keeps its shape and the other becomes deformed.
Identify and compare the property of the plastic containers demonstrated in this example.
Describe the structure of the polymers that affect this property.
Enter your answer in the space below
PLEASE HELP ASAP!!!
Answer:
Polymers are used in everything from nylon stockings to commercial aircraft to artificial heart valves, and they have a key role in addressing international competitiveness and other national issues.
Polymer Science and Engineering explores the universe of polymers, describing their properties and wide-ranging potential, and presents the state of the science, with a hard look at downward trends in research support. Leading experts offer findings, recommendations, and research directions. Lively vignettes provide snapshots of polymers in everyday applications.
The volume includes an overview of the use of polymers in such fields as medicine and biotechnology, information and communication, housing and construction, energy and transportation, national defense, and environmental protection. The committee looks at the various classes of polymers—plastics, fibers, composites, and other materials, as well as polymers used as membranes and coatings—and how their composition and specific methods of processing result in unparalleled usefulness.
how many vitamin c tablets is 250mg? (i’ll give brainliest)
What happens to the energy when you heat the iron? Why is this happening?
Answer:
When iron is heated in air it reacts with oxygen to form the compound iron oxide. Iron is a solid and oxygen is a gas. 5 Draw diagrams to show how the atoms are arranged in iron, oxygen and iron oxide in the circles below their names. Use different colours for the iron atoms and the oxygen atoms.
Explanation:
Which of these elements has the highest first ionization energy
A) oxygen
B) beryllium
C) fluorine
D) carbon
E) boron
How many moles of Fe2O3 were used to produce with 11.5 moles of CO2 ?
Moles of Fe2O3 used : 3.83
Further explanationGiven
11.5 moles of CO2
Required
moles of Fe2O3
Solution
Reaction
Fe2O3 + 3CO ⇒2Fe + 3CO2
The reaction coefficient shows the mole ratio of the reacting compound (reactants or products)
From the equation, mol ratio of Fe2O3 : CO2 = 1 : 3, so mol Fe2O3 :
= 1/3 x moles CO2
= 1/3 x 11.5
= 3.83 moles
BRAINLIST!!!
Water moving along the water cycle also moves through the Earth's environment in the form of rain, ice, snow, and surface water. This water has helped to shape the Earth's surface by which of the following processes?'
radioactive decay
chemical weathering
dissolving
physical weathering
oxidation
Answer:
I believe it is chemical weathering, physical weathering, oxidation, and dissolving...
Explanation:
what is one of the most common elements in living things.
A 2.8-kg pile of aluminum (rho = 2.70 g/cm3) cans is melted, then cooled into a solid cube. What is the volume of the cube?
Answer:
Explanation:
mass of aluminum 2.8 kg = 2.8 x 1000 = 2800 g
ρ = density of aluminum given = 2.7 g / cm³
density = mass / volume
volume = mass / density
= 2800 / 2.7
= 1037 cm³
So volume of cube required = 1037 cm³.
Which graph above shows an object’s acceleration? 1pt
a or b
and why did you choose the graph
Answer:
A. because the graph is moving uo
If ice is added to a large fish tank and a small fish bowl, both at the same termperature, the large fish tank's water will cool faster because there is more water.
TRUE OR FALSE
Answer: False
Explanation:
When a object is touching a surface, it mostly likely will change the temperature it's on, depending on how it is. Since they both have different temperatures and cooling down at the same particularity rates, it is highly false that this would happen. What WOULD would the bowl cool faster THAN the water, then the ice will transform into water.
Hope this helps and make sure to thank me!
Α. Helium (He)
В. Beryllium (Be)
C. Phosphorus (P)
D. Sulfur (S)
Answer: d
Explanation:
True or false: Oceans have no effect on the temperature on Earth’s land???
Answer:
false
Explanation:
I need help with this one question
Answer:
colder
Explanation:
What are groups on the periodic table? How many are there?
Explanation:
Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.
Answer:
The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.
Which of the following represents a neutralization reaction which hydrofluoric acid and sodium hydroxide(a base) react to produce sodium choride(a salt) and water? 
Explanation:
A neutralization reaction is a reaction that involves an acid and a base.
When an acid reacts with a base to produce salt and water only, the reaction is said to be a neutralization reaction.
Acid + Base → Salt + Water
Such reactions are classified as a double displacement reaction in which a non-ionizing product is formed
Given 5 Moles of H20. how many moles of O, are produced. Use the following Equation
2H2+O2->2H2O
Moles O2 required : 2.5
Further explanationGiven
Reaction
2H2+O2->2H2O
Required
Moles of O2
Solution
The reaction coefficient in a chemical equation shows the mole ratio of the reacting compounds (reactants or products)
From the equation, mol ratio of H2O : O2 = 2 : 1, so moles O2 :
= 1/2 x mol H2O
= 1/2 x 5 moles
= 2.5 moles
How many moles is 0.025 g of NaCO3? (Show Your Work)
mol of Na2CO3 = 2.36 x 10⁻⁴
Further explanationGiven
Mass : 0.025 g of Na2CO3
Required
moles
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass :
mol = mass : molar mass
mass = mol x molar mass
Input the value :
mol = mass : MW Na2CO3
mol = 0.025 g : 106 g/mol
mol = 2.36 x 10⁻⁴
In a modern periodic table the element are arranged in order of increasing
Answer:
what are you asking?
Explanation:
Chemical properties describe matter based on its ability to change into___
A. A new substance
B. The same thing
C. Water
D. A powder
Answer:
A. A new substance
Explanation:
sorry if its wrong if its right your welcome <3
1. Look up bromine on the periodic table. What is the most common isotope of bromine?
Answer:
The most common isotope is Bromine-79.
Explanation:
How does the molecular formula of a compound differ from the empirical formula? Can a compound’s empirical and molecular formulas be the same? Explain.
For the balanced equation shown below, if the reaction theoretically
should produce 7.99g CaO but experimentally produces 6.81 grams of
CaO, what is the percent yield?
CaCO3---->CaO+CO2
85.23%
0 14.77%
54.41%
O 117.33%
Answer:
Percent yield = 85.23%
Explanation:
Given data:
Theoretical yield = 7.99 g
Actual yield = 6.81 g
Percent yield of CaO = ?
Solution:
Formula:
Percent yield = ( actual yield / theoretical yield ) × 100
by putting values,
Percent yield = (6.81 g/ 7.99 g) × 100
Percent yield = 0.8523× 100
Percent yield = 85.23%
An element whose particles are atoms
Answer:
a chemical element
Explanation:
A chemical element is a substance that contains only one type of atom
How does the theory of plate tectonics explain the movement of the continents and changes to Earth’s surface such as volcanic eruption, earthquakes and mountain building?
Calculate the energy of light with a frequency of 5.21 x 104 Hz
Answer:
3.45*10^-29
Explanation:
E=hv
h is Planck's constant and v is the frequency (which was given to us)
E=6.626*10^-34 * 5.21*10^4
E=3.452146*10^-29
For a reaction, AH = 198 kJ. For which value of TA Sis the reaction spontaneous?
Answer:
ah+j
Explanation: