Answer:
there the start of the food chain for little fish and other fish that are bigger and keep the ocean chain moveing. hope this helps?
2) Convert 6.11 g of sodium hydroxide, NaOH to moles.
Answer:
moles NaOH = = 0.1528 mole NaOH
Explanation:
To convert grams to moles => divide grams by formula weight
To convert moles to grams => multiply moles times formula weight
In short ...
grams => moles => grams/formula wt.
moles => grams => moles x formula wt.
This problem:
moles NaOH = 6.11g/40g/mole = 0.1528 mole NaOH
Which statement best describes the polarity of the molecule Sil4?
Answer:
I dont a picture
Explanation:
but the answer is 24
A structure that contains a watery fluid which protects the embryo/fetus is 7 7 point
known as? *
chorion
amnion sac
uterus
cervix
Answer:
and unborn baby
Explanation:
an unborn baby
Identify the reaction type:
Zn(s) + HCl(aq) → ZnCl2(aq) + H2(g)
O synthesis
O decomposition
O single replacement
double replacement (or neutralization)
combustion
Answer:
The reaction type is Synthesis
Please help I’ll even give you brainliet
What is the molecular formula for a compound that is 34.31% sodium, 17.93% carbon, 47.76% oxygen and has a molar mass of 134.00g?
Answer: Na2C2O4 probably sodium oxalate
Explanation: assume you have 100 g substance.
Mass of Na is m(Na) = 34.31 g, m(C) = 17.93 g and m(O) = 47.76 g.
Calculate moles n(Na) = 34.31 g/22.99 g/mol= 1.49 mol.
For C n(C) = 1.49 mol and n(O) = 2.985. You divide all by 1.49 you
Get n(Na) : n(C) : n(O) = 1:1:2 M(NaCO2) = 67 g/mol.
Divide 134:67 = 2. You get formula Na2C2O4
A 25.2 mL sample of phosphoric acid was titrated with 32.0 mL
of 0.550 M NaOH solution. What is the concentration of the
sample given the acid-base reaction shown below?
H3PO4 + 3NaOH = Na3PO4 + 3H2O
M
Answer: 0.233 M
Explanation: (0.550 M)(0.0320 L)= 17.6e-3 mol NaOH
3:1 ratio of NaOH to H3PO4 so divide the moles of NaOH (17.6e-3) by 3. You will get 5.86e-3.
Finally, divide this number (the moles of H3PO4) by the volume (0.252 L) to get 0.233 M
The concentration of given acid base reaction will be 0.226 M
What is Acid base reaction?The chemical reactions that take place when acids and bases are combined together are known as acid-base reactions. Acids and bases are discussed in terms of hydrogen ion exchange in the Bronsted-Lowry hypothesis. A conjugate acid as well as a conjugate base are the end products of such a reaction.
The given acid base reaction is :
H3PO4 + 3NaOH = Na3PO4 + 3H2O.
It can be seen that 3 moles of NaOH give one moles of Na3PO4.
Moles of NaOH = 0.550 M/ 0.0320 L = 17.18
So, by divide the moles of NaOH = 17.18 /3 = 5.72
The given volume = 25.2 mL = 0.252 L
Concentration of acid base reaction = n / v
where, n = moles of solute , v = liters of solution.
Now, put the value of given data in above concentration of acid base reaction formula.
Concentration of acid base reaction = 5.72 / 0.252 L = 22 .69
Therefore, the concentration of acid base reaction will be 0.226M.
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i need help again guyss
Choose the correct option
Answer:
C
Explanation:
Hope this helps.
Identify each of the following mixtures as either homogeneous or heterogeneous and as a solution, a suspension, or a colloid.
Cranberry juice at the store
homogeneous
heterogeneous
solution
colloid
suspension
**Check for proof photos at the bottom.**
__________________________________________________________
Identify each of the following mixtures as either homogeneous or heterogeneous and as a solution, a suspension, or a colloid.
Cranberry juice at the store
A. homogeneous
C. solution
Smoke
B. heterogeneous
D. colloid
__________________________________________________________
Identify each of the following mixtures as either homogeneous or heterogeneous and as a solution, a suspension, or a colloid.
Blood
B. heterogeneous
E. suspension
Salad dressing
B. heterogeneous
E. suspension
__________________________________________________________
Shown here is a person shaving. Under magnification, the shaving foam might look like the image above the shaver. What type of mixture does the foam demonstrate? Give your reasoning.
Foam is a colloid. Colloids includes gas dispersed in a liquid and it also includes gas dispersed in a solid
On the next slide, you can select any answers you want, or you can select nothing. There's no wrong answer.
__________________________________________________________
A student squeezes several oranges to make a glass of orange juice. The juice contains pieces of orange pulp mixed with the juice. Explain why this drink can be considered a combination of a suspension and a solution.
The juice contains sugars, plant pigments, and other chemicals dissolved in water. This is a solution. The pieces of orange pulp will rise to the top or settle to the bottom of the juice if it is allowed to sit. The pieces of pulp mixed with the juice form a suspension
On the right side, you can also select any answers or none at all. There is no wrong answer.
__________________________________________________________
Explanation:There are two main types of mixtures, homogeneous mixtures and heterogeneous mixtures. The components of a homogeneous mixture are evenly distributed throughout the mixture. The properties of a mixture are the same everywhere. The components of a heterogeneous mixture are not evenly distributed. Different regions of this mixture have different properties.
Particles in a homogeneous mixture do not settle down or separate when left alone. Particles in a heterogeneous mixture eventually separate or settle when left alone.
Colloids are a type of heterogeneous mixture that do not naturally settle out quickly, and can be separated with different methods. A suspension is another type of heterogeneous mixtures in which the components of the mixture will quickly settle out or can be filtered or separated.Here are photos of Edge just incase.
In order to form water, two hydrogen atoms and one oxygen atom must be
A. dissolved.
B. bonded.
C. divided.
D. mixed.
Answer:
B bonded
Explanation:
Two molecules of hydrogen gas (two hydrogens bonded together) are combined with one molecule of oxygen gas (two oxygen atoms bonded together) in order to form two molecules of water (two hydrogen atoms bonded to one oxygen atom). What are covalent bonds? Covalent bonds occur when two or more atoms share electrons.
In order to form water, two hydrogen atoms and one oxygen atom must be bonded. The correct option is B.
What are covalent bonds?Covalent bonds between two or more atoms occur when they share electrons. with each other.
Two molecules of hydrogen gas are combined with one molecule of oxygen gas which forms two molecules of water. Hydrogen take one electron and oxygen can donate two electrons. One oxygen shares two electron with two hydrogen with one electron gaining capacity.
Thus, in order to form water, two hydrogen atoms and one oxygen atom must be bonded. The correct option is B.
Learn more about covalent bond.
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PLEASE HELP ME ASAP!!!!!!!!!!!!!!!!!!
Can someone please help for question 1? this is really important!!
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
In an experiment, how many variables should you change at a time? And why?
Answer:
it should test one variable at a time.
Explanation: because you will not be able to tell which variable is responsible for the observed results.
Calculate the number of atoms in 0.50 moles of Barium
Which of the following pairs of names and formulas is correct?
A.
Nitrogen Oxide – NO
B.
Sulfur Dioxide – S2O
C.
Disodium Monoxide – Na2O
D.
Beryllium Fluoride – BeF2
I know this is personal but I need some advice, grab some popcorn this is going be a long story.
So I just barely went back to real school and these new people move into the house next to me so the daughter is my sisters friend, the other sister is my friend. So on the first day ( or second or third I don't know) My friend wa sitting by me on the bus then her brother ( a grade higher than mine ) sits by me and starts asking all these weird questions, then he askes a question I don't wanna answer then I say I can't tell him and he starts poking me ( yeah i'm serious ) then I went home and my sister started telling me that her friend ( the girl who just moved to my neighborhood) told her that one of her brothers like me. So I thought that kid on the bus ( her brother) likes me. But then today he kept on looking at me then he moved to the seat by my seat and he started showing me stuff on his phone ( I didn't even ask him to) like I was his best friend, then as I was getting off HE POKED ME AGAIN. So my question is does this guy like me ? ( p.s hes 2 years older than me) Please answer anyone I need help And i need lots of feedback. And hurry. I kinda ike him
Answer:
email me 4
Explanation:
20 points! Help please
Answer: 2N2O3 -> 2N2 + 3O2
Explanation:
Answer:
2 2 3
Explanation:
2N2O3=2N2+3O2.. ....
And this one too please
Answer: Groups 15 and 16.
Explanation:
All other answer choices include metals, which form ionic bonds.
1.0 mole of KCl(aq) is added to which solution to produce a precipitate?
A)
Lit
B)
Ca2+
Agt
D)
Zn2+
Answer:
Ag+
Explanation:
If you imagine as if the problem were double replacement, you would pair the Cl with one of the following ions provided in the choices. As seen on Table F, Ag+ paired with Cl- produces an insoluble compound, hence the precipitate. All the other ions shown in the multiple choice section, when paired with Cl- will produce a soluble compound, as a result NOT a precipitate.
how many moles of hydrogen, H2, are needed to react with 6.0 moles of nitrogen, N2?
is detergent a asid base or neutral?
plzz help mee!
Answer:
It is Neutral
Explanation:
When chemicals are dissolved in water, the mixture's pH level can become either acidic or basic (alkaline). Vinegar and lemon juice are acidic substances, while laundry detergent and ammonia are basic. With a pH level of 7.0, pure water is neutral.
Find a room that can be made completely dark. In the room, tape the pieces of construction paper on a wall, slightly above eye level. Turn on the flashlight, and turn off the lights in the room. Hold the flashlight over your head and angle it down slightly so the light hits the colored paper. Can you see the light traveling through the room before it hits the paper?
Answer:
Yes, I can see the light traveling through the room before it hits the paper.
Explanation:
edmentum
Since light rays travels in a straight line, the light traveling through the dark room can be seen before it hits the paper.
What are light rays?Light rays refers to a straight line path through which light waves travel.
Light rays travel in a straight line and this phenomenon is known as the rectilinear propagation of light.
In a dark room, the path of light rays travelling in a straight can be seen.
Therefore, the light rays traveling through the room can be seen before it hits the paper.
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Hopefully you can see the picture okay! But please help!!
Answer:
More carbon was released then was absorbed
Explanation:
Which probing question lies within the scope of physics?
Ο Α.
Are fish in the open ocean attracted by underwater sounds?
OB.
Does increasing the saltiness of ocean water affect the speed of sound in the water?
Oc. What effect does the release of industrial wastewater have on the acidity of oceans?
OD.
What is the effect of rising sea temperatures on ocean currents?
Answer:
The answer is OB, Does the saltiness of ocean water affect the speed of sound in the water.
help 4 me???? ples????
Answer:
its the first one.
Explanation:
If sodium loses an electron, it now has 11 protons, 11 neutrons, and only 10 electrons, leaving it with an overall charge of +1
BaCl² produces barium gas plus chlorine gas when heated. what would be the combined mass of the barium and chlorine if 15 g of Barium chloride was heated
Chemical _____
energy is the energy stored in the chemical
bonds.
Answer:
yeah
Explanation:
it is a form of stored energy that is released when needed by a conversion chemical energy therefore it is a form of potential energy
hope this helps
Azi started an acid-base reaction by adding a spoonful of baking soda to a glass of vinegar. As the reaction progressed, the speed of fizzing in the glass slowed. What could Azi do to increase the rate of fizzing?
Explanation:
correct answer for this - C
Compound A has 4 moles of hydrogen, 4 moles of oxygen, and
1 moles of silicon. The empirical formula of the compound is _____
Answer:
H₄SiO₄
Explanation:
From the question given above, the following data were obtained:
Hydrogen (H) = 4 moles
Oxygen (O) = 4 moles
Silicon (Si) = 1 mole
Empirical formula =?
Since the number of mole of each atom of the element present is known, the empirical formula of the compound can be written as follow:
H₄SiO₄
does a single atom make a difference to the properties of matter?
Yes, all things are made of atoms, and all atoms are made of the same three basic particles - protons, neutrons, and electrons. But, all atoms are not the same. ... The difference in the number of protons and neutrons in atoms account for many of the different properties of elements.