Answers
Answer:
1. in the Northern Hemisphere the vernal equinox falls about March 20 or 21, as the Sun crosses the celestial equator going north. In the Southern Hemisphere the equinox occurs on September 22 or 23, when the Sun moves south across the celestial equator.
Explanation:
Hope this helps ^^
Related Questions
you started out as a single felled zygote.
what process changed you into a person with billions of cells
Answers
Answer:
The cell goes through the cell cycle/mitosis
Explanation:
The cell cycle is basically the process of dividing
G1 phase is where the cell grows in size, and make sure that everything is ready to divide.
Synthesis or the S phase is where the cell copies its DNA.
G2 phase is where the cells check that all its DNA has been correctly copied.
Mitosis or M phase, where the cell finally divides in two. If the cells keep on dividing exponentially, they will become billions of cells.
From this list below, select the items which are properties of ionic compounds. * 5 points low melting point conductors of electricity when in liquid or aqueous state high melting point mostly liquids and gases at room temperature soluble in water
Answers
Answer:
conductors of electricity when in liquid or aqueous state
high melting point
soluble in water
Explanation:
An ionic substance is any substance that is composed of two ions of opposite charge.
In the solid state, ionic substances do not conduct electricity because the ions are trapped inside the crystal. When in liquid state or in aqueous solution, these ions are now free and the solution becomes an electrolyte.
All ionic substances have a very high melting point and dissolve in water easily.
Using the figure, angels p and w are example of
Answer :)
Answers
Answer:
D
Explanation:
we just did this in class last week haha i know my math :)
A 500-gram block of solid cheese is melted in a pot. Which is most likely be the mass of the cheese after it is melted?
pleaseeeeeeeeee answer
Answers
Answer:
due to the law of conservation of mass, the mass would stay the same.
Renewable energy resources include *
O all of the above
O moving water
O biomass
O wind
Answers
Find the net force on a rope which is being pulled by 2 groups of
students. The blue team is pulling with a force of 1500 N to the west and
the orange team is pulling with a force of 1300 N to the east.
Answers
Answer:
200 N to the west b/c we have 1500 to west and
1300 N to east . the forces have a opposite direction.
thus we add the force. and we gain 200N force.
(-15)+(-12)+14
how do u simplify
Answers
Answer:
-15-12-14=-13
Explanation:
we simplify by opening the bracket
3Ba(C2H3O2)2 + 2K3PO4 ⟶ Ba3(PO4)2 + 6KC2H3O2
If 4.36 mol of potassium phosphate react, how many grams of barium phosphate are produced?
Answers
Hello Mistyann!
First you need to know amount of barium phosphate is
Half of potassium phosphate, also 2.18 mol.
Molar mass of Barium phosphate is 3·137.2 + 2·(30.97+4·16) g/mol
You can calculate it yourself dear.
Now mass is amount of substance · molar mass.
It has been an honour to teach you, dear,
God bless!
Which of the following is not a type of mechanical wave?
Question 3 options:
surface
concave
transverse
longitudinal
Answers
Answer:
concave
Explanation:
3. Matter with a composition that is always the same is a(n)
substance
mixture
compound
Answers
Answer:
substance
Explanation:
A pure substance is a form of matter that has a constant composition (meaning it's the same everywhere) and properties that are constant throughout the sample (meaning there is only one set of properties such as melting point, color, boiling point, etc
what are things than can circulate
Answers
Which of the following are parts of the Nervous System?
Choose all the apply
Nerves
Brain
Heart
Skin
Spinal Cord
Lungs
Answers
Answer: Nerves, Brain and spinal cord
Explanation:the other choices are either part of the cardiovascular system or the respiratory system
What number is equal to the amount of protons
and neutrons on the periodic table?
Answers
Answer:
The mass number
Explanation:
The mass number of an atom is its total number of protons and neutrons.
I hope this helps a bit.
Where does the 'Equiv' come from?
Answers
Explanation:
Equiv means equivalent ...
in which way are sugars usually transported throut a pine tree
Answers
C9H20+14O2→9CO2+10H2O a. How many molecules of nonane will burn in a tank that has 770 mL of oxygen at STP? b. If the container were heated to 78O C before the combustion, what would the pressure be?
Answers
Explanation:
C9H2O + 14O2 → 9CO2 + 10H2O
a. How many molecules of nonane will burn in a tank that has 770 mL of oxygen at STP?
From the reaction;
1 mol of nonane reacts with 14 mol of Oxygen
At STP, 1 mol = 22.4 L
Converting 770 ml (0.77 L) to mol;
1 = 22.4
x = 0.77
x = 0.77 / 22.4 = 0.034375 mol
Back to the equation;
1 mol = 14 mol
x mol = 0.034375 mol
Solving for x;
x = 0.034375 * 1 / 14
x = 0.00245535714 mol
1 mol = 6.022 * 10^23 molecules
0.00245535714 mol = x
Solving for x;
x = 0.00245535714 * 6.022 * 10^23
x = 1.4786 * 10^21 molecules
b. If the container were heated to 78O C before the combustion, what would the pressure be?
Initial Pressure P1 = ?
Initial Temperature T1 = 780 +273 = 1053 K
Final Temperature (STP) T2 = 273 K
Final Pressure (STP) P2 = 1 atm
Using gay lusaac's law;
P1 / T1 = P2 / T2
Inserting the values;
P1 = T1 * P2 / T2
P1 = 1053 * 1 / 273
P1 = 3.857 atm
Exothermic or Endothermic ~N2(g) + 2 O2(g) → 2 NO2(g) ΔH= +67.6 kJ
Explain why?
Answers
Answer:
endothermic
Explanation:
Because the value of the heat of reaction is positive .
Which, if any, of the following is named incorrectly? *
A) FeSO4; iron (II) sulfate
B) Fe(OH)2; iron (III) hydroxide
C) K3P; potassium phosphide
D) Sn3(PO4)4; tin (IV) phosphate
Answers
Answer:
I think it is either a or b
Explanation:
c or d has the correct names and Roman numerals.
Why is there a hole in the ozone layer? What do you think the consequences of that hole are?
Answers
Answer:
There is a ozone layer because of the special atomphere and chemical conditions that takes place there. I think the consequences of that home area is the very low winter temperatures.
Answer:
There is a hole in the ozone layer because of the pollution on earth. Because of that the UV rays are easily entering the earth through that portion. The consequences of this can be cancers, global warming and disastrous storms.
plz mark as brainliest
A student draws the model shown below. Which of these best compares the conditions at Location X and Location Y?
Answers
Answer:
Explanation:
You have to use formula b to your answer
Which sentence in paragraph 1 explains what Americans are doing to help the environment?
O a. Today, 60 percent of us believe that climate change is a serious threat.
O b.In 1980, coal, oil and gas made up 89 percent of the energy we used.
0
c. 90 percent of us have recycled in the last year.
O d. Sometimes you can even find low belief in climate change.
Answers
How do mountains affect the climate of a region?
(Giving brainlist for a summary and correct answer)
Answers
Answer:
Mountains can have a significant effect on rainfall. When air reaches the mountains, it is forced to rise over this barrier. As the air moves up the windward side of a mountain, it cools, and the volume decreases. As a result, humidity increases and orographic clouds and precipitation can develop
Answer:
Mountains effect them with contact
Explanation:
They are always pushing eachother and crash
is K2CO3 a reactant or product ?
Answers
Answer:
Product
Explanation:
Honestly I’m just guessing based on the fact it’s simplified and doesn’t have a really long chemical equation.
Hope this helps
What would happen if you mixed Zinc and Sulfur thoroughly,and you put a hot metal rod to it?
Answers
Answer:
A violent reaction will occur and zinc sulphide is formed as a product
Which of the following is a reasonable way of describing the density of a gas at STP
Answers
Answer:the answer is a
Explanation:
The density of a gas at standard temperature and pressure conditions is 1.40 grams per liter.
What are standard temperature and pressure conditions?Standard temperature and pressure are defined as a standard set of conditions required for experimental measurements which are established to allow comparison between different sets of data.
Standards which are commonly used are those International Union of pure and applied chemistry and national institute of standards and technology.These are not universally accepted standards but are the ones which are commonly used.
Standard conditions of pressure and temperature are necessary to define standard reference conditions used to express volumes of liquids and gases.These values are important to physicists, chemists ,engineers ,pilots and navigators.
Learn more about standard temperature and pressure,here:
https://brainly.com/question/29129606
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what is the atomic number of sulfur is.
Answers
Answer:
16
Explanation:
Answer:
16 hopes this will help you
Explanation:
16 hope this helps
Many angiosperms rely on animals for
A fertilization
B pollination
C photosynthesis
D transpiration
Answers
Explanation: Many angiosperms rely on animals for POLLINATION and seeds to produce.
how is salt obtained or manufactrured
Answers
Answer:
There are three methods used to produce salt: solar, evaporation and rock mining.
Explanation:
Explain the differences between bronze and brass, and steel and cast iron. Which is best used for cooking wares?
Answers
Answer:
Steel and cast iron
Explanation:
They are all metal but assuming that you are finding the best material for your pan i suggest going for steel or cast iron
as the temperature in a pressure cooker rose from 383 k to 431 k, the pressure rose to 1.16 atm. what was the original pressure of the cooker? plz name the gas law as well
Answers
Answer:
1.031atm
Explanation: