short asnwer:
here are 8 elements in period 2 because all those elements have electrons in the second shell and no electrons in the third shell.
Explanation:
There are certain rules for arranging atoms in shells 1) Maximum number of electrons in a shell is given by the formula 2n^2. 2) The outermost ( valence) shell can accomodate only 8 electrons.
Answer: the nubers ad up
Explanation:
you count like 12345678
How many moles of nitrogen are in 1 mole of Al(NO3)3?
O A. 4 moles of nitrogen
O B. 1 mole of nitrogen
C. 3 moles of nitrogen
O D. 7 moles of nitrogen
Answer:
c i think
Explanation:
Plants respond to different kinds of stimuli. A plant's roots searching for water are an
example of what kind of response?
A. thigmotropism
B. phototropism
C. hydrotropism
D. gravitropism
Answer:
Explanation:
Hydrotropism
please answer fast! Which of the following statements are false?
A: In a chemical change, atoms are rearranged to make new compounds.
B: The same element is present before and after a chemical change.
C: A physical change does not produce an entirely new substance.
D: A chemical property can be observed without changing the identity of the substance.
I believe it is C.
Hope this helps!
!! brainliest answer !! please help it's due tonight :)
Answer:
3. D
28. also known as Freon 12
Explanation:
Name the binary covalent compounds.
CO2:
CS2:
PBr3:
P2S5:
N2S:
SiS2:
NBr3:
N2Cl4
Answer:
CO2: Carbon Dioxide
CS2: Cardon Disulfide
PBr3: Phosphorus Tribromide
P2S5: Phosphorus Pentasulfide
N2S: Monosulfur Dinitride
SiS2: Silicon Disulfide
NBr3: Nitrogen Tribromide
N2CI4: Sorry don't know this one.
Atoms of two distinct elements are bound together by covalent bonds to form binary covalent compounds. They typically contain nonmetal elements, such as laughing gas NO, a gas that causes acid rain SO₂, etc. Binary covalent compounds are those that consist of just two components.
The definition of a covalent compound is one in which the atoms are joined by a covalent connection. Compounds with just two elements are referred to as binary covalent compounds.
The name of the given compounds are:
CO₂: Carbon Dioxide
CS₂: Cardon Disulfide
PBr₃: Phosphorus Tribromide
P₂S₅: Phosphorus Pentasulfide
N₂S: Monosulfur Dinitride
SiS₂: Silicon Disulfide
NBr₃: Nitrogen Tribromide
N₂CI₄: Dinitrogen Tetra chloride
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How can you increase reaction rate in the forward direction? Chose all that
apply
Answer:
Sorry my task time about to run out : (
Explanation:
The list shows five processes that occur during digestion.
1. Tearing
II. Grinding
III. Mixing
IV. Churning
V. Rolling
Where do these processes most likely occur?
A
in the mouth
B
in the esophagus
С
in the stomach
D
in the colon
Give the number of protons, electrons and neutrons in one atom of Carbon.
Answer:
6 protons, 6 neutrons, and 6 electrons.
Explanation:
between vertebrae
2-The backbone contains.......
c. joints
b. tendons
a. cartilages
What are two things in nature that solar energy powers?
Answer: light and heat
Explanation:Our sun is the source of all life on Earth, and solar energy is useful to us in many different ways. The sun creates two main types of energy - light and heat - that we can harness for many activities ranging from photosynthesis in plants to creating electricity with photovoltaic (PV) cells to heating water and food.
PLS HELPPPP OMG PLSPLSPLSPLSPLS
Answer:
D 44.8 L liters of hydrogen gas
I'm not getting any help here
Answer:
Oh I am sorry
Explanation:
How can I help you
Answer:
same
Explanation:
I don't know what is hapening
What do normal people call it?
Explanation:
crystal rocks blue ig
.
.
if a piece of aluminum has a density of 2.7g/cm^3. the mass of 5.2g,what is the volume
Answer:
Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.
Explanation:
Answer:2.7 g cm-3.
Explanation:Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.
FeCo2+NaCo3+Hg+Co2No3
Explanation:
the answer is sodium carbonate
Describe what happens inside a CD
player when you listen to an audio CD.
The thing that happens inside a CD player when you listen to an audio CD is that laser beam turns on and scans along a track with the photocell from the CD's center.
What are semiconductors?The electrical conductivity of a semiconductor material is between that of a conductor, such as metallic copper, and that of an insulator, such as glass.
A small photoelectric cell and a smaller laser beam (called a semiconductor diode laser) are found inside your CD player (an electronic light detector). When you hit play, the disc is rotated at a high speed by an electric motor (not visible in this figure) (up to 500rpm).
The laser beam turns on and scans along a track with the photocell from the CD's center to its edge (in the opposite way to an LP record). As the laser/photocell scans from the center to the periphery of the disc, the motor gradually slows it down (as the track number increases, in other words).
Hence laser beam turns on and scans along a track with the photocell from the CD's center.
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Which type of data relies on the senses or things you can't measure
Answer:
Nominal data
Explanation:
This is a type of data in which its set of values don't have a nominal arrangement.
For example, the color of a football jersey can be deemed as a nominal data type as we can’t distinguish one color from others. Like It is impossible to declare that ‘Pink' is greater than ‘Yellow'.
Which state of matter has the most movement of its particles?
Answer:
solids...............
Which method of heat transfer can take place without matter? (3 points)
Conduction
Convection
Insulation
Radiation
Answer:
conduction
Explanation:
i hope this helps!!! :)
Answer:
Conduction
Explanation:
The diagram below shows the different phase transitions that occur in matter.
Solid
3
Liquid
16
Gas
Which arrow represents the transition in which dew is formed?
1
O2
4
6
Answer:
C.4
Explanation:
The arrow 4 represents the transition in which dew is formed.
What is Dew?This is formed as a result of condensation which takes place in the morning or evening and is usually seen on exposed surfaces as water droplets.
The air particles in the form of vapor under low temperatures results in the formation of the substance. The arrow 4 thereby depicts it and makes it the most appropriate choice.,
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What does it mean for a solution to be saturated?
A. The solute will not dissolve in the solvent.
B. The solution contains more solute than should be possible.
C. More solute can still be added to the solution.
D. The maximum amount of solute is dissolved in it.
Answer:
D. The maximum amount of solute is dissolved in it.
Answer:
D. The maximum amount of solute is dissolved in it.
Explanation:
The period of time needed for a radioisotope to lose one-half of its activity is known as that isotopes
Explanation:
The radioactive scattering technique is called radioactive degradation. For each radioactive isotope, the natural radioactive cycle is special and is determined by a period of time termed a half-life. One half-life was its time needed to experience radioactivity for half of both the radioactive nuclei.
how does the law of conservation of mass applies to all chemical reactions?
Answer:
the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.
Explanation:
The law of conservation is Matter cannot be created or destroyed in chemical reactions so it means exactly that
What kind of mutations would X, Y, and Z represent?
10. Find the mass of 0.061 mol of H2O2.
11. Find the mass of 0.30 mol of Ne.
Answer:
10. 2.0748gm
11. 6.05391gm
Explanation:
What is specific heat?
Specific heat is the amount, like the other brainly answer said, of heat per unit mass required.
1. Which of the following
equalities is false?
A. 1 kilogram = 100 meters
B. 50 milliliters = 5 centiliters
C. 3 grams = 0.003 milligrams
D. 70 hectometers = 7,000 decimeters
fill in the blank
______ is a way to describe matter with numbers and units.
Measurement is a way to describe matter with numbers and units.
Measurement is a fundamental process used to describe and quantify various aspects of matter. It involves assigning numerical values to physical quantities and expressing them using appropriate units of measurement.
In scientific and everyday contexts, measurements provide a standardized and consistent way to communicate information about the properties, dimensions, quantities, and characteristics of objects, substances, or phenomena. By using measurements, we can describe the size, length, mass, volume, temperature, time, and many other attributes of matter.
The process of measurement typically involves two components: a numerical value and a unit. The numerical value represents the magnitude or quantity being measured, while the unit provides the reference or scale by which that quantity is expressed. Units help provide meaning, context, and comparability to measurements.
Hence, measurement provides a quantitative and objective way to describe matter, allowing us to understand and interact with the physical world in a systematic and meaningful manner.
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I NEED HELP WIT QUESTION THREE
Answer: 2.00
Explanation:
2 rounded to the nearest hundredth is 2.00
your welcome :)
answers for all three:
1. 4.00
2. 16.04
3. 2.00
help me with both number 8 and 9, I actually pressed commensalism for both of them, please be sure of your answer, first one to answer gets brainliest!
Answer:
8 is mutualism and 9 is commensalism
Explanation: