SOMEONE HELP ME PLEASE ILL GIVE BRAINLY
Snapping an instant cold pack is a
Change in temperature
Formation of gas/bubbles
Formation of precipitate
Release of energy (fire/light)
Change in color
Answer:
Formation of precipitate?
Explanation: When you do that the thingy dissolves the thingy so the thingy dissolves into nothingness of the nothing...
A scientist describes the molecules of a substance as it changes from one state of matter to another. She states that the speed of the molecules slows down over time. Which phase change could the scientist be describing?
A.gas to liquid
B.liquid to gas
C.solid to gas
D.solid to liquid
Answer:
A.
Explanation:
Particles in gas move very fast and quickly while particles in liquids are slow and closer together.
How many moles are there in 5.7 x 10^25 molecules of Na2SO4? *
Explanation:
two moles sodium (45.98 g), one mole sulfur (32.06 g), and four moles oxygen (64.00 g) combine to form one mole of sodium sulfate (142.04 g).
Which option identifies one section of the ocean floor
pls answer ASAP
Answer: neritic zone
Answer:neretic zone
Explanation:
What can you do to help reduce Acid Rain? List 5 ways.
Help me yall!! Imao
Answer:
- to produce energy without using fossil fuels instead using renewable sources solar and wind power.
- reduce the amount of sulfur dioxide released from coal-burning power plants. One option is to use coal that contains less sulfur.
- install equipment called scrubbers, which remove the sulfur dioxide from gases leaving the smokestack.
- While one car alone does not produce much pollution, all the cars on the road added together create lots of pollution. Therefore, car manufacturers are required to reduce the amount of nitrogen oxides and other pollutants released by new cars. One type of technology used in cars is called a catalytic converter. This piece of equipment has been used for over 20 years to reduce the amount of nitrogen oxides released by cars.
- recycling is one way that is often use less energy than producing a new products from raw materials so the use of energy that obtain mainly from fossil fuel will be reduced and that reduced the emissions of toxic gases.
Decreasing the amount of sulphur dioxide power plants that burn coal emit and Using less sulfuric coal is one option to reduce acid rain.
What is acid rain?Acid rain, also known as acid precipitation and acid deposition, is a type of precipitation with a pH of 5.2 or below that results from the release of nitrogen oxides and sulphur dioxide (SO2) from human activities, primarily the burning of fossil fuels. Acid deposition can impair biodiversity and lower the pH for surface waters in acid-sensitive areas.
To reduce acid Rain following steps can be taken: Generate energy using renewable resources like solar and wind energy rather than fossil fuels. Decrease the amount of sulphur dioxide power plants that burn coal emit. Using less sulfuric coal is one option. Install machinery known as scrubbers to take sulphur dioxide out of smokestack gas emissions. New automobiles must emit fewer nitrogen oxides as well as other pollutants, according to regulations for automakers. One method that frequently uses less energy than creating new items from basic materials is recycling.
Therefore, decreasing the amount of sulphur dioxide power plants that burn coal emit and Using less sulfuric coal is one option to reduce acid rain.
To know more about acid rain, here:
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Please help due in a few minutes
Answer:
Here is the opportunity for
ciaracrudup to have brainliest
since you need another answer
Explanation:
Actual answer please
which environment is characterized by high temperature and low humidity
A. Desert
B. mountain
C. rainforest
D. tundra
Answer:
Desert
Explanation:
4. An object's resistance to any change in its motion is the ___ of the object. (1 point)
force
acceleration
inertia
Answer:
Acceleration
Explanation: Force is how much one thing is being applied so it is not that and inertia is something sitting still so therefore using process of elimination, it is acceleration.
Answer: B. Acceleration
Explanation:
why are metals are used to make jewellery
Answer:
They are highly lustrous metals which are resistant to corrosion. They are highly malleable and ductile so can be transformed into any shape or design.
Explanation:
A chromate ion consist of four oxygen atom bonded to be a chromium atom. It has two extra electrons. the formula for this
Answer:
Cr04^2-
Explanation:
WILL GIVE LOTS OF POOIINNTTSSS PLEEAASSEE IMMM CRYINNNNNN
Explain specific heat in your OWN words. (2pts) Explain the equation. (1pt) Give an example of your understanding of the concept that we encounter on a daily basis. (3 pts.)
Answer: The specific heat is the amount of heat per unit mass that is essential for raising the temperature of heat by one degree Celsius. Equation is the symbolic reaction of a chemical reaction in the form of symbols and formulas, where the reactant is written on the left side and the product is written on the right side.
We encounter a lot of things in our daily life that we love and also hate. What I have faced a lot is my nail tags that happens to me a lot and hurts too. And I love dipping biscuits in tea and that never happens at once because a single biscuit is too big for the cup. Hence, I have to break it and dip. Ugh
Linda is learning how to bowl and
wants to increase the acceleration of
the bowling ball when she throws it.
Which of the following best explains
one way that Linda could increase the
acceleration of the bowling ball?
A Throw the ball with greater force
B Throw the ball in a straighter line
C Throw a ball that has greater mass
D Throw the ball with her other
hand
guess what 2nd language i can speak:
A1. german
B2. french
C3. Sarcasum
Answer:
B2 French I hope I'm right
Answer:
English
Explanation:
I mean u typing in English lol
Please help im almost out of time ill mark BRAINLIESTTT
Answer:
The first one is actually Location D
The second one is Location B
I can't read all of the 3rd one, but if it says winter, its B, if it says summer its D
Explanation:
Which metalloid has three valence electrons? boron arsenic silicon lithium
HElp PLEase
Answer:
Boron
Explanation:
First, locate the metalloids on the periodic table. (First picture) The metalloids are in the yellow section. Next, remember that the group your element is in determines its valence electrons. For example, group 17/7A has 7 valence electrons. Look at the group numbers above each column on the periodic table to find out which metalloid is the answer. In this case, we need to look at 13/3A since we know that this metalloid has three valence electrons. Not all periodic tables will be labeled with the 3A part, so remember that groups 13 and over have the amount of valence electrons after you take out the one in front. For example, group 16 has 6 valence electrons because I removed the one in front of it. Now your options should be limited down to boron because we know that it is in the yellow section in group 13.
Answer:
the answer is boron
Explanation:
got it right on edge
If 18 grams of oxygen reacts completely with 4 grams of hydrogen, we would expect how many grams of water? Question 4 options: Less than 22 grams because some mass is lost in the reaction More than 22 grams because the oxygen gains mass during the reaction 22 grams because mass cannot be created or destroyed There is no way to tell from this information.
Answer:
Less than 22 grams because some mass is lost in the reaction
Explanation:
Took the test on K12
Ionic crystals are typically brittle because distortion of the crystal lattice produces:-
a) Flow of the electrons b) Ionization of same atoms
c) Inter ionic attractions d) Inter ionic repulsion. e) None.
Answer:
b I my current pls let me known
YOU GET 55 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I am not afraid to report you and email a worker.
1) Name the type of energy we been discussing that is not found in the simulation.
2) Why doesn't the sun make the wheel move?
solve these to and you get picked brainlley
Answer:
there's no way to answer that
What happens when the oppositely charged ions are brought close together?
Which reaction below is a physical change?
a. CH4(g) + 2O2(g) → CO2(g) + 2HsO(l)
B.CaO(s) + H2O(l)→ Ca(OH)2(s)
c. H2O (l) → H2O(s)
d. 2HsO (l) → 2H2(g) + O2(l)
Answer:
c. H20 (L) ->H20 (S)
Explanation:
its just water freezing lol
pls vote brainliest tho ❤❤
The picture shows a statute of Abraham Lincoln
Your friend tells you the statute has a dull luster. What does luster tell you about a mineral?
o the color it makes when rubbed against a hard surface
O how hard the mineral is
O what color the mineral is
O how light is reflected from the surface of the mineral
Answer:
How light is reflected from the surface of the mineral.
Explanation:
To know the the correct answer to the question, we must bear in mind the meaning of luster.
Luster simply means the shining properties of a substance when light ray fall on them.
Thus, considering the question and the options given above, luster simply indicates how light is reflected from the surface of the mineral.
Answer:
d
Explanation:
1) If volcanoes form at convergent subduction boundaries type “yes”, otherwise type “no.”
2) If earthquakes happen at convergent subduction boundaries type “yes”, otherwise type “no.”
Anyone Help please??
a. 0.5 mol
b. 25 cm³
c. (i) 75 cm³
(ii) 50 cm³
Further explanationAvogadro's hypothesis:
In the same T,P and V, the gas contains the same number of molecules
So the ratio of gas volume will be equal to the ratio of gas moles
[tex]\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}[/tex]
Reaction
2NO(g)+O₂(g)⇒2NO₂(g)
a. mol O₂
[tex]\tt mol~O_2=\dfrac{1}{2}\times 1~mol~NO=0.5[/tex]
b. volume of O₂
[tex]\tt \dfrac{50}{1}=\dfrac{V_2}{0.5}\rightarrow V_2=25[/tex]
c. (i)total volume
[tex]\tt volume~NO+volume~O_2=50+25=75~cm^3[/tex]
(ii)volume of NO₂
[tex]\tt mol~NO_2=mol~NO=1\rightarrow V~NO=V~NO_2=50~cm^3[/tex]
An inherited behavior that helps an animal meet its needs
Answer:
the answer is adaptations
Explanation:
A body part or behavior that helps an animal meet its need in its environment is called an adaptation. All adaptions are inherited traits. Camouflage is an animal's color or pattern that help it blend in with its surroundings.
The Law of Conservation of Energy states that Energy cannot be ____________ nor _____________ but only change from one __________ to another.
1. Changed, Charged, From
2. Energy, Not energy, Charge
3. Created, Destoryed, Form
4. Transformed, Created, Platform
(Quick answer please, also this is science)
Two students are planning an investigation to determine if ionic or covalent bonds have stronger intermolecular forces. They are using salt (ionic), sugar (polar covalent), and moth balls (nonpolar covalent). Which property below would be the LEAST helpful in determining what bond type has the strongest intermolecular forces?
Flammability
Solubility in water
Conductivity in water
Melting Point
Answer:
conductivity in solid state/ in water
Explanation:
conducitvity in water state would be least helpful when trying to determine the bond type that has the strongest intermolecule force, becuase they (salt and water) both would dissolve in water the same.
The property that will be least helpful in the determination of the bond type that has the strongest intermolecular forces is C. Conductivity in water.
It should be noted that the students wanted to investigate whether ionic or covalent bonds have stronger intermolecular forces.
In order to carry out the investigation, salt, sugar, and molar balls are used. Based on this, the property that is required for the investigation will be flammability, solubility in water, and the melting point.
The conductivity in water isn't required.
Read related link on:
https://brainly.com/question/18426918
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Which of these is an example of a direct observation? Choose the correct answer.
using a cornstarch solution to simulate Earth’s mantle
drilling into Earth to remove rock samples for analysis
comparing Earth’s convection to water heating in a pot
pushing rubber mats together to predict the behavior of plate tectonics
Answer:
pushing rubber mats together to predict the behavior of plate tectonics
Explanation:
pushing rubber mats together to predict the behavior of plate tectonics is an example of direct observation because direct observation involves the process of using your senses and evaluating or observing closely the subject matter in other to gather informations. Through direct observations you can gather informations through activities, behaviors without depending on people's opinions to gather information needed.
HELP ASAP WILL MARK BRAINLIEST
Answer:
Its C
Explanation:
