how do different stimuli affect the survival behavior of an organism?
5. (03.02 LC)
What is the charge on an atom after it gains an electron during the formation of a bond? (5 points)
One positive charge
Two positive charges
Two negative charges
One negative charge
one negative charge because electrons have a negative charge
I REALLY REALLY NEED HELP RIGHT NOW!!!! 20 PTS! A scientist is studying a liquid. If she lowers the temperature of the liquid,
which of the following will most likely occur?
The liquid will boil
The liquid will melt
The liquid will freeze
The liquid will evaporate
Answer:
The liquid will freeze
Explanation:
well see... all the other answers require INCREASING the temp, so yeah.
please brainliest me. i just gave away 1300 points in the last 24 hours for questions like "what is 1+1"
How long does it take a ray of light to travel from the Sun to Earth?
A. 2 hours
B. 8 minutes
C. 2 years
D. 30 minutes
Answer:
it should take about 8 minutes and 20 seconds
so, b
In a closed circuit the electricity cannot flow, the motor will not run.
True or false?
someone help me pls
Which is an example of a double
replacement reaction?
2Na+ Cl2 + 2NaCl
H2SO3 → H20 + S02
2K + 2H20 – 2KOH + H2
NaCl + AgF-NaF + AgCI
Answer:
NaCl + AgF → NaF + AgCl
Explanation:
A double replacement reaction is a type of chemical reaction that occurs when two reactants exchange cations or anions to yield two new products.
From all the reactions given ,
2Na + Cl₂ → 2NaCl is an example of combination reaction because two or more reactants (Na & Cl₂) react with each other to form a single product (NaCl)H₂SO₃ → H₂O + SO₂ is an example of decomposition reaction because a single reactant (H₂SO₃) breaks down into two or more products (H₂O & SO₂).2K + 2H₂O → 2KOH + H₂ is an example of displacement reaction because a highly reactive element (K) displaces a least reactive element (H) from its compound (H₂O).NaCl + AgF → NaF + AgCl is an example of double replacement reaction because there's an exchange between Cations ([tex]Na^+[/tex] & [tex]Ag^{+}[/tex]) and Anions ([tex]Cl^-[/tex] & [tex]F^-[/tex]).Can someone please provide me a picture of raw egg (uncracked), spatula, and pan
Answer:
Aight bud :3
Explanation:
:3
1) 120KM/H A M/S Y CM/S
2) 80KM/H A M/S Y CM /S
3) 75 M/S A KM/H y M/MIN
4) 35KM/H A M/S ; M/MIN ; CM/ S
nesecito ayuda pliss
Calculate the temperature when a 2.51L sample of gas at 25.0 °C is reduced to 1.75 L? (answer must be in K)
\Large \frac{V1}{T1}=\frac{V2}{T2}
Answer:
208 K
Explanation:
youre welcome
According to the Charle's law, when pressure is constant the temperature when a 2.51 L sample of gas at 25.0 °C is reduced to 1.75 L is 207.76 K.
What is pressure?Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.
There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .
It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.As per Charle's law substitution of values gives T₂=298×1.75/2.51=207.76 K.
Learn more about pressure,here:
https://brainly.com/question/18431008
#SPJ3
convert 3.6 x 10^2 atm to torr
Answer:
3.6 x (10^2) atm = 273 600 torr
Explanation:
Hope that helps
Emily and Jack are working on their chemistry homework together. Jack explains to Emily
that when element "B" reacts, it will gain one electron and become negative since
electrons are negative. Emily asks if this same element can become negative by taking
away a proton. If you were Jack, what would you explain to Emily?
the protons is theato.m if you take one away you change the element
Explanation:protons determine the element take away the proton and the element changes. That means that the same element cannot become negatively charged by taking away the protons
Which weather component describes how fast the wind is moving?
Wind direction
Wind pressure
Wind speed
Wind vane
7) Which element would have the lowest first ionization energy? *
Li
Be
Na
Mg
Answer:
Dos quintos al cuadrado dividido cinco medios a la menos 1.
Explanation:
Answer:
Na which is sodium.....
when it rains the water that falls is ____ the earth
An elements identity is decided by how many_____
it has.
Answer:
Number of protons!!
Explanation:
Answer:
An elements identity is decided by how many PROTONS it has.
Which statement best describes the temperature of the ocean's surface water?
A. Areas with a high salinity have the coldest water.
B. Areas at high latitudes have the coldest water.
C. Areas with a low density have the coldest water.
D. Areas close to the equator have the coldest water.
Answer:
d
Explanation:
what would life be like if we couldn’t change reaction rates?
Answer: if a biochemical reaction in our body is too fast or too slow it can endanger our life.
Explanation:in other example ,rate of reaction is obviously very important to the chemical industry. The rate of reaction dictates the rate of production our daily products.
Which best describes sodium chloride (NaCl)?
Answer: NaCl is an ionic compound
Explanation: Sodium Chloride is formed from Na+ and Cl- ions.
It is soluble in water, it has crystalline structure, it has high melting point and
It is insulator as solid form. Water solution leads current.
Heat energy that is lost cannot usually be used to produce work.
True False
Answer:
true
Explanation:
thanks for free point
in what kind of reaction do two or more substances combine
Answer:
The answer is synthesis reaction
Explanation:
Also known as a composition reaction, a synthesis reaction is a reaction in which two or more substances combine to form a new compound.
I copied and pasted the explanation part. But I hope the information is still helpful :)
Nearly all weather occurs in the layer of the atmosphere called the
A. stratosphere B. ionosphere C. mesosphere D. troposphere
Answer:
Troposphere
D.
Explanation:
The troposphere is the lowest layer of our atmosphere. Starting at ground level, it extends upward to about 10 km (6.2 miles or about 33,000 feet) above sea level. We humans, live in the troposphere, and nearly all weather occurs in this lowest layer.
What types of energy are involved in a chemical reaction?
Is the energy required for a chemical reaction to take place, and
Is the energy associated with
every substance.
Activation Energy
The types of energy that are involved in a chemical reaction are : (A) Activation Energy and (B) Chemical Energy. - The energy required for a chemical reaction to take place is known as the activation energy. - If the energy is less than the activation energy, the reaction will not take place.
what is coulombic attraction as it pertains to an atom?
Can SOMEONE PLEASE HELP!!!!!!!
TIMES PLEASE HELP ASAP
Answer:
C
Explanation:
I took this class it's C they are balanced
Which factors cause weather patterns? Check all that apply.
Answer:
The five factors that determine the weather of any land area are: the amount of solar energy received because of latitude; the area's elevation or proximity to mountains; nearness to large bodies of water and relative temperatures of land and water; the number of such storm systems as cyclones, hurricanes, and ...
How many continents out of the 7 are completely surrounded by water?
Answer:
Africa, Asia, Australia, Antarctica, Europe, North America, and South America.
Explanation:
Is this correct please check!!!
Answer: yes it has to be
Explanation: i have done this answer before and got a 100 but dont remember all the answers
When an atom of calcium (Ca) forms an ion by losing two electrons, what is the ion’s type and charge?
cation, 2+
anion, 2−
cation, 2−
anion, 2+
Answer:
cation +2
Explanation:
A cation is a positively charged ion, while an anion is a negatively charged ion. Contrary to how it sounds, when an atom loses electrons, it's charge becomes more positive. Since the calcium atom lost 2 electrons, it is a positive (+2) ion.
The electrical charge of the calcium ion is +2.
How much energy is required to vaporize 10.00 grams of water at its boiling point?
Answer:
22,600 J or 22.6 kJ
Explanation: