Answer:
b!
Explanation:
Answer:
c - both rock types
Explanation:
when weathered and eroded they can become sediments!
Compare and contrast the behavior of the food coloring and the floating pieces of paper before and after adding heat to the system. What caused the changes you observed
Answer:
the answer is c
Explanation:
Answer:
Im doing this rn :0, look at explanation ill try to help
Use different words
Have a great day!
pls give brainliest and hit the heart if this helped :3
Explanation:
The changes I observed are that when you do not use hot water, the food coloring stays at the bottom and doesn't spread to the top, but when I do use food coloring, it spreads everywhere in the water. I don't know what caused the changes I observed, but I think its because heating food coloring does something to it to make it spread, maybe hotter liquids spread faster?
How do you think our understanding of genes might affect doctors ability to treat or prevent disease in the future?
Answer:
dentifying genetic variants Genome sequencing has the potential to improve the diagnosis of conditions caused by changes in the DNA and indicate what treatments may be most effective. Importantly, it may also red-flag treatments likely to cause adverse reactions.
Explanation:
Answer:
Identifying genetic variants Genome sequencing has the potential to improve the diagnosis of conditions caused by changes in the DNA and indicate what treatments may be most effective. Importantly, it may also red-flag treatments likely to cause adverse reactions.
Explanation:
The asthenosphere flows because of
A buffer solution contains 0.345 M acetic acid and 0.377 M sodium acetate . If 0.0613 moles of potassium hydroxide are added to 250 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding potassium hydroxide. )
Answer:
pH = 5.54
Explanation:
The pH of a buffer solution is given by the Henderson-Hasselbach (H-H) equation:
pH = pKa + log[tex]\frac{[CH_3COO^-]}{[CH_3COOH]}[/tex]For acetic acid, pKa = 4.75.
We calculate the original number of moles for acetic acid and acetate, using the given concentrations and volume:
CH₃COO⁻ ⇒ 0.377 M * 0.250 L = 0.0942 mol CH₃COO⁻ CH₃COOH ⇒ 0.345 M * 0.250 L = 0.0862 mol CH₃COOHThe number of CH₃COO⁻ moles will increase with the added moles of KOH while the number of CH₃COOH moles will decrease by the same amount.
Now we use the H-H equation to calculate the new pH, by using the new concentrations:
pH = 4.75 + log[tex]\frac{(0.0942+0.0613)mol/0.250L}{(0.0862-0.0613)mol/0.250L}[/tex] = 5.54I need to know why the particles at the surface in the image below have surface tension while the particles below the surface do not.
What are the three major Eras from 600 million years ago to today
Answer:
he Paleozoic, Mesozoic, and Cenozoic.
Explanation:
"What is the potential energy relative to the water surface of a diver at the top of a 26 m
high diving platform? Suppose she has a mass of 35 kilograms."
Answer:
PE = 8918 J
Explanation:
Formula for potential energy here is;
PE = mgh
Where;
m is mass
g is acceleration due to gravity
h is height
We are given;
m = 35 kg
h = 26 m
Thus;
PE = 35 × 9.8 × 26
PE = 8918 J
2. Germ cells are found in the
A. heart
B. lungs
C. muscles
D. ovaries
Answer:
D- located in ovaries...
C2H6 + Cl* => C2H5* + HCl
Answer:
C2H6 + Cl → C2H5 + HCl
equation is balanced
Why is boiling water a physical change
Answer:
it is cleaning the water and heating it
Answer:
When boiling the water, the water will begin to evaporate and thats the physical change.
Read the question and help me with the answer please
Make a song give me some bars
Answer:
Make me a song give me some bars wait am i rappin to hard livin life high crazy right touch on her shhh f in th mhm aint waistin no time lets get into it tonight
Explanation:
PLEASE HELP What's the mass in grams of 0.442 moles of calcium bromide, CaBr2? The atomic
weight of Ca is 40.1 and the atomic weight of Br is 79.9.
A) 452.3 g
B) 53.04 g
C) 44.2 g
D) 88.4 g
Answer: Thus there are 88.4 g of calcium bromide.
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
Molar mass of = 40.1 (1)+ 2(79.9) = 199.9
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
[tex]0.442=\frac{x}{199.9}[/tex]
[tex]x=88.4g[/tex]
Thus there are 88.4 g of calcium bromide.
A motor boat is traveling 10 m/s on a sunny calm day. The driver turns
off the engine. Apply Newton's first law to explain what happens to the
boat as it glides through the water. *
Answer:
If there is no resistance, current, wind, or friction on the boat, the boat would keep moving in the same direction at the same speed.
Explanation:
Newton's First Law of Motion suggests that if no external force acts upon an object, that object would continue moving in the same direction at the initial speed.
However, all objects near the surface of the earth (including the boat in this question) experience the effect of gravitational pull (an external force from the earth.) Because of these external forces, Newton's First Law of motion (when phrased in this way) would not apply to the boat.
It is frequently possible to use a more general version of this statement: if the net force on an object is zero, that object would continue moving in the same direction at the initial speed.
In other words, the object would move in the same direction at the initial speed as long as all the external forces on that object balance each other.
Assume that there is no resistance, current, wind, or friction on the boat. After the engine of the boat is turned off, the following would be the forces on this boat:
downward gravitational attraction from the earth, andupward buoyancy from the water, which counteracts the gravitational attraction on the boat.If the water is sufficiently calm, these two forces would balance one another. The external force on this boat would be zero. Hence, the boat would keep moving in the same direction at the same speed.
if a runner decreases his velocity from +20 m/s to +10 m/s what is his average acceleration
Answer:
f a runner decreases his velocity from +20 m/s to +10 m/s, with average acceleration is -5m/s².
Explanation:
understanding coefficients
Answer:
Mg-9
N-6
C-2
O-4
Ca-9
P-6
O-24
Explanation:
before phase change: molecules move around each other 15. The medicine in the diagram above has molecules that are moving around each other. The doctor needs to slow down the molecules enough to cause a phase change. How will she do this, and how will this affect the medicine? I She transfers energy ... a into the medicine until it is a liquid. b) into the medicine until it is a gas. C out of the medicine until it is a solid. d out of the medicine until it is a liquid. LE 1 21 Illuminate Education, Inc.
Answer:
She transfers energy out of the medicine until it is solid. So the answer would be C.
Explanation:
According to the forces of attraction , molecules can be slowed down by moving out of the medicine until it is a solid , it will decrease the rate of absorption of medicine.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
Learn more about forces of attraction,here:
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Which animal is a vertebrate
Fish
crab
shrimp
octopus
Answer:
fish
Explanation:
vertebrate is an animal with a spinal cord surrounded by cartilage or bone ,so example of a vertebrate is fish
What is the volume of an object with the mass of 7.9 grams in the density of 2.28g/ml.
Answer:
3.7mL is the volume of the object
Explanation:
To convert the mass of any object to volume we must use density that is defined as the ratio between mass of the object and the space that is occupying. For an object that weighs 7.9g and the density is 2.28g/mL, the volume is:
7.9g * (1mL / 2.28mL) =
3.7mL is the volume of the objectMore than half of the elements are in which state of matter at room temperature?
What happens to the atomic mass when the atomic numbers increase?
Which elements does not belong to a main group of elements?
Please help I really need help!!
Answer:gas
Explanation:
0.24 moles of a gaseous product from a reaction is collected in a 25.0-L container at a pressure of 300.0 kPa. Determine the temperature (in °C) at which the gas was collected.
Answer:
3428.58 °C
Explanation:
We'll begin by converting 300 KPa to atm. This can be obtained as follow:
101.325 KPa = 1 atm
Therefore,
300 KPa = 300 KPa × 1 atm / 101.325 KPa
300 KPa = 2.96 atm
Next, we shall determine the temperature. This can be obtained as follow:
Number of mole (n) = 0.24 mole
Volume (V) = 25 L
Pressure (P) = 2.96 atm
Gas constant (R) = 0.0821 atm.L/Kmol
Temperature (T) =?
PV = nRT
2.96 × 25 = 0.24 × 0.0821 × T
74 = 0.24 × 0.0821 × T
Divide both side by 0.25 × 0.0821
T = 74 / (0.24 × 0.0821)
T = 3755.58 K
Finally, we shall convert 3755.58 K to °C. This can be obtained as followb:
T(°C) = T(K) – 273
T(K) = 3755.58 K
T(°C) = 3755.58 – 273
T(°C) = 3428.58 °C
Thus, the temperature at which the gas was collected is 3428.58 °C
What is the correct IUPAC name for Al(IO₃)₃?
Answer:
Aluminum Iodate
The IUPAC name of Al(IO3)3 is diiodyloxyalumanyl iodate.
What is IUPAC name ?The systematic method of nomenclature of the organic or inorganic compound on the basis of International Union of Pure and Applied Chemistry.
To learn more about IUPAC name here.
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What consist of a solid matter?
How do I balance coefficient equations
Answer:
In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal.
Answer: When you balance a chemical equation, you change coefficients. You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation, you add these whole number multipliers (coefficients) to make sure that there are the same number of atoms on each side of the arrow.
Explanation:
The graph below shows distance over time. Which of these situations
could be represented by this graph?
Pls answer quick
Answer:
the second option
Explanation:
look at the distance where the meet up at the house and the go to school
how is the water cycle the driving process behind weathering erosion and deposition
An insecticide kills many insects, but a few survive. Because of natural selection, which of the following is most likely to happen
1- Eventually the survivors will become resistant to insecticide
2- the survivors will reproduce, and the offspring will be resistant to the insecticide
3- the survivors will reproduce, but the offspring will be killed by another application of the insecticide
4- the survivors will continue to survive for many years beyond their normal lifespan
Answer:
2
Explanation:
the ones that survived are the ones that had the favorable trait, so they'll be able to reproduce and their offsprings are likely to receive that trait as well.
how many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine (CI2) with excess methane?
1. The type of bond most likely to
occur between Mg and Br is a(n)
bond.
---
Answer:
Ionic bond.
Explanation:
Group 7 elements like Bromine (Br) and group 2 elements like Magnesium,(Mg) involved loss and gain of electrons which is typical with Ionic bonding.
What is the boiling point of 1 cup of water with 6 tablespoons of salt?
Explanation:
best answer i could say was this