Answer:
A
Explanation:
In simple terms: Hammer goes one way, air goes the other way.
Answer:
d
Explanation:
i took the test
3. The two main driving forces of the water cycle are the Sun and...
1 gravity
2 wind
3 volcanoes
4 rain
PLZ HELP!!!!!asapnow
Answer:
Friction of wind against the ocean surface
What does the salinity of seawater represent?
The concentration of salt dissolve in the ocean
The concentration of all dissolved chemicals in the ocean
The volume of salt in the ocean
the mass of salt in the ocean
Answer:
Salinity is a measure of the 'saltiness' of seawater, or more precisely the amount of dissolved matter within seawater.
What patterns do you notice between the three maps? Using the concepts
you've learned in this lesson, construct an explanation for these patterns in your
Science Notebook or in the space below.
Answer:
A spatial pattern is a perceptual structure, placement, or arrangement of objects on Earth. It also includes the space in between those objects. Patterns may be recognized because of their arrangement; maybe in a line or by a clustering of points.
Explanation:
Why do scientist use the scientific method
Answer:
B
Explanation:
scientists always look for evidence
Answer:
Yea its B
Explanation: The person above me legit toke the answer out of my mouth
How can calcium oxide change directly to limewater?
Wants equation and observation
Answer:
Lime(Calcium Oxide) is a white solid with strongly basic properties.Lime reacts readily with water to produce slaked lime,which is the chemical compound calcium hydroxide.....
When carbon dioxide gas is passed through or over limewater,it turns milky due to the formation of calcium carbonate.
Please help due soon fill in the blanks will give brainliest
Answer:
Proton has positive charge (+) and located in nucleus
Electron has negative charge (-) and located in electron cloud
Neutron has neutral charge (0) and located in nucleus
If we react 5.4g of sodium chloride with an unknown amount of fluorine gas, we produce 4.9g of sodium fluoride and 3.7g chlorine gas. How much fluorine was consumed in the reaction?
Answer:
4.43 g
Explanation:
The reaction between sodium chloride and flourine gas is given as;
NaCl + F2 --> NaF + Cl2
From the stochiometry of the equation;
1 mol of NaCl reacts eith 1 mol of F2 to form 1 mol of NaF and Cl2
Mass of 1 mol of F2 = 38g
Mass of 1 mol of sodium flouride, NaF = 42g
This means 38g of flourine reacted with NaCl to form 42g of NaF
xg of F2 would form 4.9g of NaF
38 = 42
x = 4.9
x = 4.9 * 38 / 42
x = 4.43 g
1. What happens when an electric current is applied to a tube filled with a gas, like neon, electrons...
Answer:
When an electric current is passed through a gas, the gas emits light. Neon signs operate in this way; a tube having an electrode at each end is filled with a gas at low pressure and a high voltage (generally in the range of 1000 to 5000 volts) is applied to the electrodes.
Explanation:
what is the molar mass of just the O in CO2?
Answer:
16 g/mol
Explanation:
In CO2, it means we have 1 mole of carbon and 2 moles of oxygen.
However, we want to find the molar mass of just a single mole of oxygen.
Now, from tables of values of elements in electronic configuration, the molar mass of oxygen is usually approximately 16 g/mol.
In essence the molar mass is simply the atomic mass in g/mol
can someone please help me, i'll give you a 5 star rating and brainliest answer
Balance the following chemical equation by providing the correct coefficients.
Na + H2O ———— NaOH+H2
Please help!!!!!!!!
Answer:
2, 2, 2, and 1
Explanation:
I put that in and it was correct.
"During germination, the fertilized egg begins to sprout and grow. Each seed contains an embryo, or tiny plant, and it needs the right condition to grow. These conditions include the basic need of water, the correct temperature, and the right location, which is in the soil."
Answer:
See the answer below
Explanation:
Read the following passage and identify the error. During germination, the fertilized egg begins to sprout and grow. Each seed contains an embryo, or tiny plant, and it needs the right condition to grow. These conditions include the basic need of water, the correct temperature, and the right location, which is in the soil. Select the statement that corrects the error in the passage. Seeds are fertilized during germination, not before. Basic conditions include wind, not water. The fertilized egg begins to grow and mature, not an embryo. The fertilized seed begins to grow and sprout, not an egg.
A typical seed consists of a fertilized ovule which forms the embryo. Double fertlization ensures that a structure, the endosperm, surrounds and provide nutrition to the embryo while in a state of inactivity.
During germination, the embryo sprouts and grows given the right conditions of moisture, air, temperature, and other factors that may vary from seeds to seeds.
The substance that cannot be broken down into a simpler form by ordinary chemical means is called a __ ?
Answer:
Elements
Explanation:
An element is any substance that cannot be broken down into simpler form by ordinary chemical means.
Elements are distinct substances that cannot be split up into simpler substances. .
Such substances consist of only one kind of atom. There are over hundred elements known till date. Elements are made up of unique atoms. In a chemical reaction, elements combines and rearranges.
Lucy volunteers at an animal shelter, and she takes care of an orange tabby 1 point
cat and her kittens. Some of the kittens have orange markings, but some
have gray markings. What units of genetic material determine how living
things look?
Answer; the answer is variations
The unit of genetic material that determines how living things look is called variations, look below for more description.
What are genetic variations?Hereditary variety alludes to contrasts among the genomes of individuals from similar species. A genome is all the innate data — every one of the qualities — of a creature. Hereditary variety is the distinction in DNA successions between people inside a populace.
For example, the human genome contains somewhere close to twenty and 25 thousand qualities.
Find more information about Genetic variations here:
brainly.com/question/14926046
Making Sense
1. School bus drivers are extra careful when they cross railroad tracks. They stop before they cross railroad tracks to be sure that there is no
train coming. Yet, trains typically move more slowly through towns than cars do. If trains usually move more slowly than cars, why can
they do more damage if they hit something in their path?
=
2
11
B
1
GO
III
un
III
X2
Saved January 15, 2021 07:35:00 PM
Answer: I think that trains move faster then cars! Buttt, The trains are much stronger and bigger, then cars or trucks. Even if they move slowly they can still crush something smaller then them.
Explanation: ( didnt really understand the question, but i tried)
what is the chemical formula for Sulphate...
Answer:
SO4²
Explanation:
Formula and structure: The sulfate ion formula is SO42- and the molar mass is 96.06 g mol-1. This salt is formed by one sulfate center to which 4 atoms of oxygen are attached, 2 of these atoms are forming S=O.
Answer:
[tex]so _{4} ^{2 - } [/tex]
Explanation:
sulfate is consisting of sulfur element with 4 oxygen as the structure in the pic given and this group is 2- charged
A student claims that a large percentage of water on Earth is immediately available to drink. Is he correct? Why or why not?
Answer:
No, the student is not correct. The earth may have a lot of water... but not every part of water is drinkable. Most water is filled with bacteria and or viruses making it not suitable to drink! :)
Explanation:
HOPE THIS HELPS! BRAINLIEST? :)
what would you observe if sodium and potassium are placed in hot water.
Answer:
Sodium reacts more quickly, generating enough heat to melt itself and to occasionally ignite the hydrogen gas, producing a yellow-orange flame characteristic of sodium. The potassium reacts violently, immediately bursting into a flame which has the characteristic violet color of potassium.
Explanation:
Cu(NO3)2 is what compound?
Answer:
the compound's name is copper nitrate
Give the name of one of the 3 common acids used in chemistry
Answer:
Common strong acids include hydrochloric acid, sulfuric acid, phosphoric acid, and nitric acid. Common weak acids include acetic acid, boric acid, hydrofluoric acid, oxalic acid, citric acid, and carbonic acid.
A closed container is the best way to measure the volume of a
A. gas
B. liquid
C. solid
D. Both A and B are correct.
Answer:
A closed container is the best way to measure the volume of a liquid
How many atoms of beryllium are equal to 0.39 moles of beryllium?
Answer:
2.35 x 10²³atoms
Explanation:
Given parameters:
Number of moles of Be = 0.39moles
Unknown:
Number of atoms = ?
Solution:
To solve this problem:
1 mole of a substance contains 6.02 x 10²³ atoms
0.39 mole of Be will contain 0.39 x 6.02 x 10²³ = 2.35 x 10²³atoms
Which equation is balanced in an acidic solution?
Answer:
I think C but it could be D
Explanation:
I would say go for C
6/14and3/7 answer 6/11and9/16answer 5:6=10:12answer
your question was incomplete.............. you haven't mentioned any required information
Now you will focus on a second hypothesis. This hypothesis can be very similar to the first, but this time you want to focus only on the second variable in question, speed. What could be a hypothesis that would illustrate the relationship between speed and kinetic energy? Use the format of "if…then…because…” when writing your hypothesis.
Answer:
If the mass of an object increases, then its kinetic energy will increase proportionally because mass and kinetic energy have a linear relationship when graphed.
Explanation:
is correct answer
Answer:
Sample Response: If the speed of an object increases, then its kinetic energy will increase proportionally because speed and kinetic energy have a linear relationship when graphed.
Explanation:
Which of the following is an example of a chemical change?
A. Boiling water
B. Burning paper
C. Dissolving sugar in water
D. Melting gold
Answer:
b.) burning paper
Explanation:
Can you help plzzz thank you
Answer:
It would be Container 3
Explanation:
Each of the containers has the same amount of salt. Salinity refers to salt level. Since the question is asking for the container with the greatest salinity, you are looking for the container with the least water (because it will be the saltiest out of all of them). Container 3 has the least water.
Hope this helps :)
3 has less water so its saltier
What is the percent composition of nitrogen in N 2 O
Answer:
28 %
Explanation:
Mass mass N2O = 28 + 16 = 44 mass nitrogen = 2 x 14 = 28 % nitrogen Chemistry.
Which reaction will proceed most quickly or be the easiest?
A. Li and F
B. Li and CI
C. Nah and F
D. Na and CI
Answer:
C. Na and F
Explanation:
The reaction between Sodium and fluorine will proceed more quickly and easily of all the given reaction choices.
This is because fluorine is the most electronegative element and sodium is more electropositive when compared to Lithium.
This significantly large electronegativity difference between the atoms confers a high reactivity on both of them. In this reaction, an ionic bond forms by the virtue of sodium losing one electron to be gained by fluorine. This way both atoms becomes isoelectronic with Neon.