Answer:
a
Explanation:
Which statement is true about the elements in the periodic table?
Elements in family 2 are all nonmetals.
Elements in period 4 are all metals.
Elements in period 6 have similar properties.
Elements in family 7 have similar properties.
(Please don't send a link to a different site and just tell me which one it is)
Answer:
Give the other person brainliest
Explanation:
WILL GIVE BRAINLIEST NO SPAM OR LINKS THEY WILL GET REPORTED
How can a force act directly on an object? Explain.
Answer:
The quantity of force is expressed by the product of mass (m) and acceleration (a). Mathematically the equation can be written as
F = ma
Where,
F= Force
m = mass
a = acceleration
When a force acts on an object the objects the objects have different effects of force. So let us know about the effects of force on an object.
Explanation:
Answer:
Explanation:
An applied force is a force that is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object.
A 50 gram piece of glass with the specific heat of 0.84 J/gºC is heated from 35°C to 46°C. How much heat is added to the glass?
А
11
B
193 J
С
462 J
D
1470 J
A species of insect will most likely go extinct as a result of which of the following changes to its environment?
A The introduction of a toxic pollutant to the entire range of the species
B The separation of the population into two geographic regions
C The gradual replacement of its primary food plant by a related species
D Climate change that extends the period of its reproductive activity
Answer:
A or D but I think MORE A
Explanation:
more like a than D
When a species becomes extinct all its genetic heritage is lost. Here The introduction of a toxic pollutant to the entire range of the species causes the extinction of the species and also the climate change. The correct options are A and D.
What is extinction?The process of evolution which leads to the disappearance of a population or species is defined as the extinction. The species evolve into new species in order ton adapt to the environmental changes in the genetic heritage.
The pollution from industries and vehicles will cause a drastic change in the level of oxygen in the atmosphere as well as water. This is responsible for the extinction of the most of the aquatic as well as terrestrial species.
Climate change is also an another factor which cause the destruction of the organisms. Many organisms are died due to global warming.
Thus the correct options are A and D.
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20 points I will give you brainliest if you answer in 5 mins
How is an image formed by a plane mirror?
A) Light bounces off of the mirror and then appears to come from in front of the mirror.
B) Light passes through the mirror and then appears to come from behind the mirror.
C) Light passes through the mirror and then appears to come from in front of the mirror.
D) Light bounces off of the mirror and then appears to come from behind the mirror.
Answer:Light bounces off of the mirror and then appears to come from behind the mirror.
Explanation:Plane mirrors form images that are virtual, upright and the same size and shape as the object it is reflecting.
When rays of light from the object hits a plane mirror they bounces off the mirror,that is they undergo reflection, and appear to originate from behind the mirror, resulting to the formation of a virtual image.
The image formed appears to be behind the plane in which the mirror lies. A virtual image is an image that is formed at a location from which the rays of light appear to come from. The image can not be formed on a screen..
Please help
Will give brainliest
A - 1
B - 2
C - 3
D - 4
E - 5
Answer:
B-2
Explanation:
In the graph you can so that two of the shapes ae fully black, that means that they are color blind, the half colored ones means they are a carrier but they aren't color blind. So two males in the offspring are color blind.
Before a forest fire, scientists observed that there were 10 different types of trees. After a forest fire, they noticed that only 3 of them regrew within 3 months. Which inference would be the most correct?
A. Most of seeds of trees are unaffected by forest fires.
B. Biodiversity in a forest increases after each fire.
C. Certain tree seeds are better adapted to survive forest fires.
D. Forest fires will permanently remove certain species of trees.
This might look confusing but I really need help on this!!
I suck at chemistry
Answer:
I believe the answer is A
Answer:
A) the mass of the reactants is the same as the mass of the product
I guess
Explanation:
the law of conservation of mass stats that Mass of reactant is always equal to the Mass of the product
Can someone help me. I fell asleep in class. T-T
In a covalent bond electrons are ____ between atoms.
Answer:
In a covalent bond electrons are shared between atoms
A solution that contains more OHions than H30+ ions, is called a(n)... O A. base O B. acid O C. neutral solution O D. isosolution
Answer:
a
Explanation:
what do scientists believe formed the moon's craters and regolith
Answer:
What is most widely accepted today is the giant-impact theory. It proposes that the Moon formed during a collision between the Earth and another small planet, about the size of Mars. The debris from this impact collected in an orbit around Earth to form the Moon.
Explanation:
Okay, okay. Serious time. What is the difference between electric and mechanical energy? Name 2 examples for each, and give one situation for each.
Answer:
Kinetic Energy can be defined as the energy possessed by the object by the virtue of its motion. The sum of these two energies is often called Mechanical Energy of the System. ... Electric Energy is also a form of these 2 energies: Electric potential energy stored in a charged particle in an electric field.
Explanation:
sorry if im wrong T-T
How does the curved beak of a king penguin compare to the curved, cup-like structure of the pitcher plant?
They are both used to catch prey.
They are both used to collect water.
They both help avoid being eaten.
They both help protect the eggs.
please helpp
Both pitcher plant and king penguin use their physical adaptation to catch pray. The curved beak of the penguin helps them easily catch fish from snow similarly pitcher plant has the cup like structure to capture pray. Hence, option A is correct.
What is prey catching pitcher plant ?Pitfall traps, a prey-trapping mechanism with a deep hollow filled with digesting fluid, are modified leaves on a kind of carnivorous plants known as pitcher plants. Specialized leaves are used to create the traps in what are known as "genuine" pitcher plants. Using nectar, the plants draw in and suffocate their victim.
Flying, flying, or crawling insects that are out foraging are drawn to the hollow created by the cupped leaf by visual cues such nectar and anthocyanin colors.
Insects fall into the trap because the pitcher is slippery after being saturated by dew or nectar. To aid in preventing escape, the walls of the pitfall may be covered in waxy scales, protruding aldehyde crystals, cuticular folds, downward-pointing hairs, or lunate cells that originate from guard cells.
The sharp curved beak of penguin helps to easily catch their pray. Therefore, option A is correct.
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this is prolly ez but im kinda d.u.m.b
Answer:
18
Explanation:
The atomic number is also the number of electrons, hope i could help!
PLZZZZZZZ HELPPPPPPPPPPP:))))
What type of bird egg is this btw i live in sc i found it in my backyard my dog was about to step on it
pls say right answer
PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....BUT U MUST TYPE EVERYTHING needed ASAP
all I need you to do its to type out these pictures word for word it pretty simple
Other Causes of Extinction
In addition to habitat destruction, other human-caused problems are also threatening many species. These include issues associated with climate change, pollution, and over-population.
Climax Community
A climax community is the end result of ecological succession. The climax community is a stable balance of all organisms in an ecosystem, and will remain stable unless a disaster strikes.
Invasive Species
As we have learned earlier in the unit, invasive or non-native species can also change an ecosystem.
When invasive species enter an ecosystem they change that ecosystem's dynamic and cause a disruption to the flow.
Habitat Destruction
Your habitat can be altered, and you can easily adapt. Most people live in a few different places and go to a number of different schools throughout their life. But a plant or animal may not be able to adapt to a changed habitat.
Humans often destroy the habitats of other organisms. Habitat destruction can cause the extinction of species.
Extinction is the complete disappearance of a species. Once a species is extinct, it can never recover.
Human Activity
It's important to note that human activity has the greatest impact on the amount and quality of wildlife habitat in many areas of the world. Wildlife habitat can be destroyed or its quality diminished as a result of urban growth, agricultural practices, pollution, or habitat destruction.
People can also have a positive impact on wildlife populations through improvement and protection of habitat or ecosystems. Planting trees and shrubs and providing sources of food and water in individual yards is one way people can help wildlife.
pls helps and no files since my school have blocked things like that on my computer
A little help please
Answer: Cell
Explanation: The cell is the most basic unit of life.
no link just right answer
Answer:
I think it is C since the trees hold the habitats of the animals and provide cover so with less animals there is less diversity.
Can anyone help me with this since it is a quiz and I am really bad at chemistry!!
Answer:
Down below <3
Explanation:
1. 1 [tex]N_{2}[/tex] + 3 [tex]H_{2}[/tex] ---> 2 [tex]NH_{3}[/tex]
2. 2 [tex]KClO_{3}[/tex] ---> 2 KCl + 3 [tex]O_{2}[/tex]
3. 1 [tex]Na_{3}PO_{4}[/tex] + 3 HCl ---> _ 3_ NaCl + 1 [tex]H_{3}PO_{4}[/tex]
4. 1 [tex]C_{2}H_{6}O[/tex] + 3 [tex]O_{2}[/tex] ---> 2 [tex]CO_{2}[/tex] + 3 [tex]H_{2}O[/tex]
a 2 cm cube made of acrylic has a mass of 9.7 g. What is the density of the acrylic?
Answer:
here
volume of cube = l^3
=2cm^3
=8cm^3
now,
mass=(9.7÷1000)kg
=0.0097kg
volume=8cm^3÷100=0.08
we know that,
density=mass/volume
= (0.0097/0.08)kg/m^3
= 0.12125kg/m^3
Explanation:
the formula to calculate volume of cube is l^3 so here we find the volume of cube using this formula and then we convert gram into kilogram then convert cm into m then by applying the formula of density we find it density
A 2 cm cube made of acrylic has a mass of 9.7 g. The density of the acrylic is 0.12125 kg m3
What is density?Density is the mass of per unit volume.
[tex]Volume of cube = l^3\\=2cm^3\\=8cm^3[/tex]
mass 9.7 kg, converted into kilograms = 0.0097kg
[tex]Volume \;= \dfrac{8cm^3}{100} = 0.08[/tex]
Calculating the density
[tex]Density = \dfrac{mass}{volume} \\\\\dfrac{0.0097}{0.08} = 0.12125\;kg\;m^3[/tex]
Thus, the density of the acrylic is 0.12125 kg m^3.
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pls help me no links
Answer:
mixture
Explanation:
Help ill give brainlist‼️‼️
Answer: molecules
Explanation:
is the mass of water greater than the mass of two gases
What is the smallest unit of an element that retains the properties of that element?
A.Eletrons
B.Molecule
C.Neutron
D.Atom
Answer:
Atom
Explanation:
The smallest unit which maintains an element's properties is an atom.
ASAP LIKE RIGHT NOW
What is the frequency of a wave?
Answer:
The number of waves that pass a fixed point in a given amount of time
Explanation:
Which medical condition(s) can prevent molecules from entering the cell?
Answer:
Explanation:
any type of spreading disease that kills
Answer:
The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others. Small molecules that are nonpolar (have no charge) can cross the membrane easily through diffusion, but ions (charged molecules) and larger molecules typically cannot.
Explanation:
pease mark this answer as brainlest
Two white powders were mixed together. A chemical reaction occurred, and a yellow powder was formed. What is the relationship between the yellow powder and the white powders?
A. The yellow powder is made up of the same kinds of atoms as the white powders, but the atoms are combined into different molecules. The yellow powder is made up of the same kinds of atoms as the white powders, but the atoms are combined into different molecules.
B. The yellow powder is made up of the same kinds of molecules as the white powders, but the molecules are a different color. The yellow powder is made up of the same kinds of molecules as the white powders, but the molecules are a different color.
C. The yellow powder was released from inside the atoms of the white powders. The yellow powder was released from inside the atoms of the white powders.
D. There is no relationship between the yellow powder and white powders. There is no relationship between the yellow powder and white powders.
Answer:
A
Explanation:
The answer for the question is A