Answer:
Explanation:
when a burning splinter is introduced into a jar of carbon dioxide the burning fire gets puts out due to the presence of carbon dioxide which is a colorless odorless gas that prevents the burning of fire
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
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).
To know more about photoelectric effect and electrons
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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.
Answer: 3 cm
Explanation:
I sorta forgot the answer someone help
Answer:
The energy stored within things :)
Determine the number of meters in 1.00 miles
Answer:
There are 1609.344 meters in a mile
Explanation:
Consider a cloudless day on which the sun shines down across the United States. If 2559 kJ of energy reaches a square meter (m2) of the United States in one hour, how much total solar energy reaches the entire United States per hour? The entire area of the United States is 9,158,960 km2 .
In 1 hour, 2.344 × 10¹⁶ kJ of solar energy reaches the United States.
The entire area of the United States is 9,158,960 km². We will convert it to m² using the conversion factor 1 km = 10³ m, squared.
[tex]9,158,960 km^{2} \times (\frac{10^{3} m }{1km} )^{2} = 9.158960 \times 10^{12}\ m^{2}[/tex]
In order to find the amount of solar energy that reaches 9.158960 × 10¹² m² we will use another conversion factor: 2559 kJ of energy reaches a square meter of the United States in one hour.
[tex]9.158960 \times 10^{12}\ m^{2} \times \frac{2559 kJ}{m^{2}.h } = 2.344 \times 10^{16} kJ/h[/tex]
In 1 hour, 2.344 × 10¹⁶ kJ of solar energy reaches the United States.
You can learn more about unit conversions here: https://brainly.com/question/19420601
8. Predict the missing products of the double replacement reaction: MgCl2 + Na2S—___+____
a. MgS + NaCl2
b. MgS + NaCl
c. MgNa + CIS
d. MgNa2 + Cl2S
Answer:
d.MgNa2+Cl2S
Explanation:
the reaction should balance on both sides
what is an example of density? pls helppp
Answer:
sruff that has to do wuth vikun=
Explanation:
good job
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
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.
Answer:
Equilibrium composition for, no2 =.7365
The equilibrium composition for, nN2=3.76
Explanation:
what's the agriculture
Answer:
the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
Explanation:
Mark me as brainiliest
Answer:
Agriculture is a practice of farming, including cultivation of the soil for growing crops and the rearing of animals to provide food,wool and others.
Hope it helps !What's you favorite food
Answer:
all of it
Explanation:
my favourite food is pasta.
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
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.
Learn more: https://brainly.com/question/13114933
is AU is homoatomic or heteroatomic?
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
To learn more about atomic structure refer:
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What are the variables used in an experiment? How are they different?
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:
CH3NH2+ H2N-CH2-COOH
CH3NH2+ Alanin
Answer:
i don't understand
Explanation:
Ii don't understand
Did they scientist believe in God
Answer:
some of them not believe in God
which
each these
A tame the
belong
a cha Cooth
group of Compounds to
acid
can boxylic
B) Catty
*
C2H4
Answer:
please I don't understand the question, rewrite it
What is the mass number for Iron-58?
Answer:
58
Explanation:
mass number of iron 58 is 58
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
370,149.12 centimeters
Use this Bohr Model to answer the questions below
A piece of metal with the mass of 254 g is placed in a 50.0 mL graduated cylinder. The water level rises from 25.0 mL to 46.5 mL, what is the density of the metal?
Density is simply defined as the mass per unit volume of a substance. Mathematically, it is expressed as:
[tex]Density = \frac{mass}{volume }[/tex]
To solve the question given above, we'll begin by calculating the volume of the metal. This can be obtained as follow:
Volume of water = 25 mL
Volume of water + metal = 46.5 mL
Volume of metal =?Volume of metal = (Volume of water + metal) – (Volume of water)
Volume of metal = 46.6 – 25
Volume of metal = 21.5 mLFinally, we shall determine the density of the metal. This can be obtained as follow:
Mass of metal = 254 g
Volume of metal = 21.5 mL
Density of metal =?[tex]Density = \frac{mass}{volume }\\\\Density = \frac{254}{21.5} \\[/tex]
Density of metal = 11.81 g/mLTherefore, the density of the metal is 11.81 g/mL
Learn more: https://brainly.com/question/19239648
Multiply 28.3 x 22.2 x 3.65 and round to the correct number of significant
figures.
Answer:2293
Explanation:
28.3*22.2*3.65=2293.149
=2293 1sf
what provided evidence of the big band theroy
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:
Help! please i'm kinda stuck in here and i know it's really easy but i literally forgot
An atom that has lost electrons is a:
Answer:
The atom that has lost an electron becomes a positively charged ion (called a cation)
PLEASE MARK ME BRAINLIESTAnswer: it’s a cation
Explanation:
How many names make up binomial nomenclature?
A(3)
B(4)
C(1)
D(2)
Subtract to find the temperature changes
for the water and the metal.
I
°C
AT (water) =
AT (metal) = -1
°C
Copper
Answer In picture
Answer:
1.9
Then
-75.4 C
Explanation:
In tHe PiCtuRe
hey please help man...
1. Cations are ____________ charged and have less ____________than ____________.
2. Anions are ____________ charged and have more ____________ than ____________.
3. Columns on the periodic table are known as ____________.
4. The elements in the first group are called ____________ and have ____________
valence electron(s).
Answer:
1. Cations are positively charged and have less electrons than protons.
2. Anions are negatively charged and have more electrons than protons.
3. Columns on the periodic table are known as groups.
4. The elements in the first group are called alkalis metals and have one valence electron.
Explanation:
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
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
How many atoms? H_____, O_____, Fe_____ Total atoms? _____ 3Fe(oh)2
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^_^
