Answers
Answer:
Platinum sulfide
Explanation:
Related Questions
What does the half-life of a radioactive substance indicate?
A. It indicates how dangerous the substance is to humans.
B. It indicates how much energy is released over time.
C. It indicates how long it takes for the material to decay.
D. It indicates how long it takes until all radioactivity is gone
Answers
Answer:
it indicates how long it takes for the material to decay
Explanation:
hope this helps!
The half-life of a radioactive substance indicates how long it takes for the material to decay.
What is half-life of a radioactive?A half life is the amount of time it takes for half of a radioactive substance to decay.
Radioactive isotopes are defined as the isotopes which undergo decay processes very easily. They have very short half life. They are usually the isotopes of heavier elements.
Half life is defined as the time taken for the unstable isotope to fall to half its original value.
Hence, option C is correct.
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Determine the number of meters in 1.00 miles
Answers
Answer:
There are 1609.344 meters in a mile
Explanation:
The hydrophobic effect is the primary driving force for protein folding because: Question 4 options: a) A folded protein is able to form the most hydrogen bonds b) An unfolded protein maximizes the entropy of a biological system c) A folded protein maximizes the entropy of water
Answers
What is the mass number for Iron-58?
Answers
Answer:
58
Explanation:
mass number of iron 58 is 58
what is an example of density? pls helppp
Answers
Answer:
sruff that has to do wuth vikun=
Explanation:
good job
Three students use a meterstick with millimeter markings to measure a length of wire. Their measurements are 3 cm, 3.3 cm, and 2.87 cm,
respectively. Explain which answer was recorded correctly.
Answers
Answer: 3 cm
Explanation:
is AU is homoatomic or heteroatomic?
Answers
Answer:
AU is homoatomic
Explanation:
Homo-atomic Molecule: Molecules provided by unique one variety of particles are associated as Homo-atomic molecules
Ex: H2, N2, P4 etc.
Hetero-atomic Molecule: Particles constituted by several kinds of atoms are identified as Hetero-atomic molecules
Ex: CO2, NO2, CH4, HCl etc
As AU is homoatomic because this element is formed by only one atom
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name the types of polymerization and the differences
Answers
Radical Polymerization: occurs by propagating radical monomers or monomer that has unsaturated bonds, such as ethene, initiated by formation of radical from the monomer by using uv lights/other initiator, does not produce any by products
Use this Bohr Model to answer the questions below
Answers
b. The student leaves the beach because a hurricane warning comes in. In a
hurricane, water is warmed by the Sun. The air above the ocean is warmed by the
water and rises, causing cooler air masses to sink, resulting in wind. Describe how
heat transfer is involved in hurricanes. (3 points)
Answers
a wooden baseball bat is an example of
a: compound
b: element
c: heterogeneous
d: homogeneous
Answers
Compound or element
A wooden baseball bat is an example of a heterogeneous substance.
A heterogeneous substance is consists of compounds that are not thoroughly mixed together.
Woods are fibrous structural substances with spaces present in trees and other woody plants' stems as well as roots. They are composed of a natural composite of cellulose fibers and are contained with a lignin matrix that is capable of resisting compression.
They can use for fire, building, the manufacture of weapons and tools, furniture, as well as paperwork.
Wood is a heterogeneous, highly porous cellular material. It is made up of cells and the cell walls are made up of roughly 40% cellulose, 15% hemicellulose, and lignin of about (15–30%).
Therefore, we can conclude that a wooden baseball bat is an example of a heterogeneous substance.
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Which statement best describes the light that will cause emission of electrons from a given metal through the photoelectric effect?
light with a low enough intensity
light with a high enough frequency
light with a high enough intensity
light with a low enough frequency
Answers
Answer:
b
Explanation:
edge 2021
The best describes the light that will cause emission of electrons from a given metal through the photoelectric effect is " light with a high enough frequency. "
What is photoelectric effect?When electromagnetic radiation, like light, strikes a substance, the photoelectric effect would be the generation of electrons.
What is electrons?The smallest atom-forming particle is an electron, which has negatively charged.
The photoelectric effect would be a phenomenon where electrically charged particles were released from or contained within a substance as electromagnetic radiation will be absorbed. The effect is often referred to as the emission of electrons from such a metal plate when light strikes it.
Therefore, the correct answer will be option (B).
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The three most common phases of matter are _______.
Answers
Answer:
solids, liquids, gases
What are the variables used in an experiment? How are they different?
Answers
Answer:
There are many items that could be altered to test the reaction of another. These changing quantities are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled.
Explanation:
What's you favorite food
Answers
Answer:
all of it
Explanation:
my favourite food is pasta.
A vessel initially containing 1 kmol of CO and 4.76 kmol of dry air forms an equilibrium mixture of CO2, CO, O2, and N2 at 3000 K, 1 atm. Determine the equilibrium composition.
Answers
Answer:
Equilibrium composition for, no2 =.7365
The equilibrium composition for, nN2=3.76
Explanation:
Estimating Circle the correct answer
1. Gas is $5.00 for 2 gallons and you want to fill your almost full gas tank which can hold an additional 1.5 gallons, you will spend a) $5.00 b) less than $5.00 c) more than $5.00
Answers
To fill your almost full tank with additional 1.5 gallons, you will spend less than $5.00
According to the question;
2 gallons of gas cost $5.00
Recall that your tank is almost full and what you need is additional 1.5 gallons.
If;
2 gallons of gas cost $5.00
1.5 gallons cost 1.5 * 5.00/2 = $ 3.75
$ 3.75 is less than $5.00 hence the correct answer is option B: less than $5.00.
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GET IT RIGHT FOR BONUS
Filtration is the most appropriate method for separating a solution of water and which substance?(1 point)
salt
sand
sugar
alcohol
Answers
Answer:
Sand
Explanation:
with salt distillation will work, heat the solution and collect the water in a seperate beaker
With sugar you do the same, boil away the water and collect the water vapour, you'll be left with sugar in the original container and water if you collected it
Use a fraction of column and heat the solution, the alcohol will be seperated out
Sand is the only one that uses mechanical filtration
What will happen to the atoms and molecules of a substance when it undergoes a
chemical reaction?
Answers
Answer:They change
Explanation:
Be more specific the next time you ask a question :)
Which of the following sets of elements has the same chemical properties?
A) F, CI, Te
B) Li, Na, Ba
C) Cu, Ag, Au
D) U, P, Si
Answers
Determine the mass in grams of 2.25 × 10²¹ atoms of copper.
Answers
Answer:
0.373 g
hope i helped ya
How many names make up binomial nomenclature?
A(3)
B(4)
C(1)
D(2)
Answers
How many atoms? H_____, O_____, Fe_____ Total atoms? _____ 3Fe(oh)2
Answers
Answer:
H = 6
O = 6
Fe = 3
Total atoms = 15
Explanation:
3Fe (OH)2
Fe = 1×3
O= 2× 3 = 6
H= 2× 3 = 6
Total atoms = 6+6+3=15
I hope I helped you^_^
which
each these
A tame the
belong
a cha Cooth
group of Compounds to
acid
can boxylic
B) Catty
*
C2H4
Answers
Answer:
please I don't understand the question, rewrite it
MULTIPLE CHOICE QUESTION
If there are 5280ft in 1 mile, 12 inches in ift, and
2.54 cm in 1 inch, what is 2.3 miles in cm?
0.0011 cm
370,149.12 cm
Answers
370,149.12 centimeters
(d) Calculate the relative molecular mass of ammonium sulphate (NH4)2SO4.5H2O
[A, O= 16.0; H= 1.0; C= 12.0; N= 14.0; S= 32.1]
Answers
Answer:
222.1
Explanation:
(14+4*1)*2+32.1+16*4+(2*1+16)*5=222.1
Subtract to find the temperature changes
for the water and the metal.
I
°C
AT (water) =
AT (metal) = -1
°C
Copper
Answer In picture
Answers
Answer:
1.9
Then
-75.4 C
Explanation:
In tHe PiCtuRe
Coro Aspa Saige polo catee miio
jdjauu suaye aleoahd ahdu allenaodp aury.
bela siei aheuao
For Carbon - 14, the top number will be ____. The bottom number will be ____.
Answers
what provided evidence of the big band theroy
Answers
Answer:wo major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Explanation:
I Will Mark Brainliest !
Please answer all questions as completely as possible showing all work needed. Also don’t forget to include your units
density = mass / volume
d = m / V
2) Calculate the density of a material that has a mass of 52.457 g and a volume of 13.5 cm3.
3) A student finds a rock on the way to school. In the laboratory he determines that the volume of the rock is 22.7 mL, and the mass in 39.943 g. What is the density of the rock?
4) The density of silver is 10.49 g/cm3. If a sample of pure silver has a volume of 12.993 cm3, what is the mass?
5) What is the mass of a 350 cm3 sample of pure silicon with a density of 2.336 g/cm3?
6) Pure gold has a density of 19.32 g/cm3. What volume would a piece of gold have if it has a mass of 318.97 g?
7) The density of lead is 11.342 g/mL. What would be the volume of a 200.0 g sample of this metal?
8) The mass of a toy spoon is 7.5 grams, and its volume is 3.2 mL. What is the density of the toy spoon?
9) A 28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark, from this information, calculate the density of iron.
10) A rectangular block of copper metal weighs 1896 g. The dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper? (Hint: V = l x w x h)
Answers
pray for my test on monday❤️
