Answer:
Decomposition
Explanation:
One reactant has formed two products
Read the dictionary entry. The adjective radiant in a dictionary entry, showing syllable breakdown and pronunciation guide. 1. Releasing heat 2. Made of radiation 3. Filled with light or very bright The noun radiant in a dictionary entry, showing syllable breakdown and pronunciation guide. 1. The origin of a meteoric shower Read the sentence. She looked at the nighttime sky and saw the silver moon's radiant glow. Which dictionary definition best describes how the word "radiant" is used in this sentence? releasing heat made of radiation filled with light or very bright the origin of a meteoric shower
Answer:
Filled with Light or Very Bright
Explanation:
I took the quiz.
Answer:
your answer is the third one filled with light and very bright
Explanation:
i got it right on the quiz hope it helps
Raoul ate a meal of oats before seeing his doctor. Oats are made of mostly starch molecules. Raoul feels tired, so his doctor gave him a test and found that raoul’s cells contained glucose molecules, but they did not contain enough oxygen molecules. Does this explain why raoul feels tired?.
No, his digestive system is breaking down starch molecules, but his respiratory system may not be working properly.
Oat starch which is mainly stored in the oat endosperm is the most abundant carbohydrate component of oats, and its content varies between 40-50% depending on the variety and growing conditions. Sayer and White 2011. Starch after extraction of oat amylose content lipids was determined by Gudmundson and Eliasson.
Whole grain oats contain large amounts of valuable nutrients such as protein starch unsaturated fatty acids, and dietary fiber in soluble and insoluble fractions. Starch is composed of two glucose polymers amylopectin, and amylose which together form insoluble semi-crystalline starch granules. Both polymers are composed of conjugated glucan chains connected by branch points, but their structure and biosynthesis differ.
Learn more about Raoul feeling tired here:-https://brainly.com/question/28751479
#SPJ1
a rock is examined to determine its age, and the ratio of uranium-235 to lead-207 is found to be 125,000:875,000. the half-life of uranium-235 is 700 million years. how old is the rock being examined?
The old age of rock when examined is 21.4 million years if the ratio of uranium-235 to lead-207 is found to be 125,000:875,000. the half-life of uranium-235 is 700 million years.
Decaying EquationP = [P + D] (1/2) ^(t/t(1/2))
where,
P represent the present parent amount
D is the present daughter amount
t(1/2) is the half life time period
t is the actual age
We know that,
t = (log[(P+D) /P] / log2) × t(1/2) ----------(1)
Given,
P = 97.6
D = 2.1
Ratio of P and D can be calculated as
P/D = 97.6/2.1
= 46.476
By substituting all the values in eq(1), we get
t = [(log 46.476 +1)/log2] × t(1/2)
Given,
The half life of U —Pb decay is 700 million years.
So,
t = [(log 46.476 +1)/log2] × 700
t = 21.4 million years.
Thus, we calculated that the the old age of rock when examined is 21.4 million years.
learn more about Half life period:
https://brainly.com/question/20309144
#SPJ4
DISCLAIMER:
The given question is misprint on portal.
Here is the correct form of question:
A rock is examined to determine its age, and the ratio of uranium-235 to lead-207 is found to be 125,000:875,000. the half-life of uranium-235 is 700 million years.
How old is the rock if it contains Uranium-235/ lead-207 ratio of 97.6 to 2.1?
Kinetic Energy Problems = KE = 0.5m x 12
1. 5 kg wooden block moving at a speed of 2 m/s
2. 71kg man walking at 1.0 m/s
3. 71kg man running at 5.0 m/s
4. 1816kg car traveling at 25 m/s
Explanation:
The kinetic energy of an object is given by :
[tex]K=\dfrac{1}{2}mv^2[/tex]
1. Mass, m = 5 kg
Speed, v = 2 m/s
[tex]K_1=\dfrac{1}{2}\times 5\times (2)^2\\\\=10\ J[/tex]
2. Mass, m = 71 kg
Speed, v = 1 m/s
[tex]K_2=\dfrac{1}{2}\times 71\times (1)^2\\\\=35.5\ J[/tex]
3. Mass, m = 71 kg
Speed, v = 5 m/s
[tex]K_3=\dfrac{1}{2}\times 71\times (5)^2\\\\=887.5\ J[/tex]
4. Mass, m = 1816 kg
Speed, v = 25 m/s
[tex]K_4=\dfrac{1}{2}\times 1816\times (25)^2\\\\=567500\ J[/tex]
What kind of bonding holds together
the atoms in a sample of pure zinc
Answer:
Metallic Bonding
Explanation:
Zinc is a metal, as such it's atoms are held together by the metallic bond. Metallic bond is a type of chemical bond formed between positively charged ions in which there is a collective sharing of a sea of valence electrons.
Which of the following statements about non-metal elements is true?
Answer:Put pic
Explanation:we cant answer if theres no details(pictures)
HELP ASAP, HELP NEEDED QUICK, IT'S TIMED
If the concentration of reactants is higher, then the reaction rate is ______.
Select one:
a. generally lower
b. rate determining step is eliminated
c. not affected
d. generally higher
Answer:
option D generally higher
which contains the least number of electrons
Answer: I don't know try your best
Explanation:
What is the density of a board whose dimensions are 5.54 cm x 10.6 cm X 199 cm and
whose mass is 28.6 g?
Answer:
0.00244g/cm³ (3 s.f.)
Explanation:
The formula of density is [tex]\frac{mass}{volume}[/tex]. We already know the mass is 28.6kg, so we need to find the volume first before calculating the density.
Volume of board = 5.54 cm × 10.6 cm × 199 cm
= 11 700 cm³ (3 s.f.)
Density of board = [tex]\frac{28.6}{11 700}[/tex]
= 0.00244g/cm³ (3 s.f.)
Answer:
d = 0.0024 g/cm³
Explanation:
Given data:
Density of board = ?
Volume = 5.54 cm× 10.6 cm× 199 cm
Mass of board = 28.6 g
Solution:
Formula:
d = m/v
d = density
m = mass
v = volume
Volume = 5.54 cm× 10.6 cm× 199 cm = 11686.1 cm³
d = 28.6 g/ 11686.1 cm³
d = 0.0024 g/cm³
CAN SOMEONE PLZ HELP!!!
Are the chemical equations balanced or not?
Answer:
Remember, chemical reactions follow the law of conservation of mass. Chemical equations show this conservation, or equality, in terms of atoms. However, simply writing down the chemical formulas of reactants and products does not always result in equal numbers of atoms
Explanation:
Answer:
Yes
Explanation:
i think so as there are 2 h on the left
ASAP please and thankyou
Options:
pollen
pistil
purple
white
Answer:
pistil
Explanation:
What’s the answer????
The colored circles below represent three fake elements A, B
and C.
The fake elements combine to form the following compound.
What is the chemical formula for the compound shown above?
The chemical formula for the compound is AB₂C₄.
What are chemical formula?A chemical formula is define as a formula which identifies each constituent element by its chemical symbols, and indicate the proportionate number of atom of each elements.
Chemical formula is can also be called as empirical formula.
Example - Chemical formula for water is H₂O.
Chemical formula provides chemical composition of a compound.
Chemical formula of a compound is crucial when it represents a chemical equation.
Thus, the chemical formula for the compound is AB₂C₄.
To learn more about chemical formula, refer to the link below:
https://brainly.com/question/11995171
#SPJ1
similar
ffer.
jum
eride
Which statements are true regarding these two
compounds? Check all that apply.
Acetone is a covalent compound, while
sodium chloride is an ionic compound.
Ionic compounds conduct electricity well in
their solid (pure) form.'
Covalent compounds have weak attractions
between molecules, resulting in low melting
points.
ECI
1°C
olid
Answer:
-Acetone is a covalent compound, while sodium chloride is an ionic compound
-covalent compounds have weak attractions between molecules, resulting in low melting points
Explanation:
Answer: A and C mah dudes
Explanation: Edgy 2020 <3
convert 7.1x10^25 molecules of water to moles
Answer:
117.94 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{7.1 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 117.940199...[/tex]
We have the final answer as
117.94 molesHope this helps you
You are a chemist working in your laboratory. In your storage closet you have a cabinet that holds only samples of pure elements, no compounds. While looking for a sample of lithium (Li), you notice that the label on one bottle has worn off. The room is at normal temperature. The contents of the bottle are liquid and do not look metallic. What element should you relabel the bottle as?
Answer:
Mercury
Explanation:
While it is true that most metals are solid at room temperature, mercury is liquid at room temperature hence mercury is often designated as the 'liquid metal'.
Thus, if i find a bottle on the shelf that has no solid in it, only liquid and i know that only pure metals are stored in that area of the laboratory, then i will quickly relabel it as mercury.
Define the term 'structural isomerism'.
Answer:
In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a compound is another compound whose molecule has the same number of atoms of each element, but with logically distinct bonds between them. The term metamer was formerly used for the same concept.
Explanation:
Foolow me amd if you think i am correct make me brainlist
plz help asap
Choose all the answers that apply.
The elements in group 18 _____.
are highly reactive
are gases at room temperature
usually do not react with other elements
are in a group called the noble gases
are nonmetals
mass in grams of 3.32 mol k
Answer:
129.8 grams
Explanation:
Im a bit confused of what your are asking but if your are asking the mass in grams of K (Potassium) it is very easy dont worry
You multiply mols x Molecular weight.
So
3.32x 39.1= 129.8 grams
What product should be recorded in the last row of the table?
2LiCl + 3O2
3LiCl + 2O2
2LiO + 3Cl2
3LiO+ 2Cl2
Answer:
2LiO+2CL2
Explanation:
took the test
Answer:
It's A. 2LiCl + 3O2
Explanation:
Process of elimination babyyyyy
define the molecular of a substance
Answer:
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge. hope this helps :)
halogenation of propane
Answer:
The halogenation of propane discloses an interesting feature of these reactions. All the hydrogens in a complex alkane do not exhibit equal reactivity. For example, propane has eight hydrogens, six of them being structurally equivalent primary, and the other two being secondary
What is a negative Gibbs free-energy value an indication of?
an enzymatic reaction
a reversible reaction
a spontaneous reaction
an equilibrium reaction
A negative Gibbs free-energy value is an indication of a spontaneous reaction. This means that the reaction will occur without the need for any external energy input and will release energy that can be used to drive other processes. The correct answer is option c.
Gibbs free energy is a thermodynamic quantity that describes the amount of energy available to do work in a system. It takes into account both the enthalpy (heat) and entropy (disorder) of a system.
A negative Gibbs free-energy value indicates that the reaction will release energy and increase the disorder of the system, which is a characteristic of spontaneous reactions.Therefore, a negative Gibbs free-energy value is an indication of a spontaneous reaction. Option c is the correct answer.
Learn more about Gibbs free energy here:
https://brainly.com/question/13795204
#SPJ6
Can someone help me please? It’s due before 2 today...
Answer:
A inside the nucleus
Explanation:
All the protons (and neutrons) in an atom belong in the nucleus of an atom. Only the electrons of an atom stay in orbit.
Which has a higher melting point k2O or MgO???
Please hurry!!
Answer:
MgO (Magnesium Oxide)
Explanation:
K20 = 1,343° ±5° C
MgO = 5,166°F (2,852°C)
MgO > K20
Why aren't 3rd 4th and 5th compounds having same stability?
Answer:
Due to cis trans isomerism
Explanation:
why do magnets move objects in different ways
Answer:
Each magnet has a north and south end. Only opposite ends can attract, But if the ends are the same, they push away from each other. Magnets in some engines make it spin in a certain direction.
in a Lewis structure, why must pairs of unshared of lone pairs if dots be placed around the outside of some of the atoms
Answer:
In a Lewis symbol, the symbol for the element is used to represent the atom and its core electrons. Dots placed around the atom are used to indicate the valence electrons. ... In 1916, Gilbert Newton Lewis, an American chemist, suggested that molecules were formed when atoms shared pairs of outer electrons.
Explanation:
Lewis structures show the electrons in the valence shell of atoms in molecules.
Lewis structures are representations of molecules. They consist of the symbol of the element and the valence electrons in the atoms. The electrons are often shown as dots.
The atoms in molecules could be lone pairs or bond pairs. The bond pairs are shown as two dots on an atom. Since lone pairs are localized on an atom, they are shown as dots on the symbol of the atom that contain them.
Learn more: https://brainly.com/question/25249351
1.3 How Science Works - Notes
What is science?
Answer: I think you have to look in the textbook
Explanation:
it's impossible to answer without the stinking textbook
Some lipid rafts are characterized by an accumulation of cholesterol. What does this mean for the fluidity of the lipid raft?.
The lipid rafts are less fluid than the surrounding membrane at normal temperatures.
Cholesterol decreases the fluidity of the membrane at normal temperatures.
Lipid rafts regulate neurotransmission, receptor traffickinging and influence membrane fluidity.
For example, in phospholipid layer in cell membrane, there are hydrophilic heads (polar part of the layer) and hydrophobic tails (nonpolar part of the layer).
1) Small, non-polar molecules diffuse easily through this layer, no energy is required, this is passive transport.
2) Polar molecules cannot diffuse through phospholipid layer using passive transport, because hydrophobic tails does not allow that (polar molecules are reppeled), energy is required for that, this is active transport.
More about cholesterol: brainly.com/question/841110
#SPJ4