Answer:
Physical
Explanation:
Nothing has chemically happened and the change is permenant therefore it is physical
lactase is an enzyme that breaks down a sugar found in dairy products known as lactose. Some people are lactose intolerant, and this can be due to not having enough lactase production. People who are lactose intolerant may not feel well after eating foods containing lactose. Illustrate the scenario and describe the relationship between the substrate and enzyme.
Answer
If people with lactose intolerance eat dairy products, the lactose from these foods pass into their intestines, which can lead to gas, cramps, a bloated feeling, and diarrhea.
Some people can have small amounts of dairy without problems. Others have a lot of stomach trouble and need to avoid all dairy products. Many foods, drinks, and digestive aids are available to help manage lactose intolerance.
Explanation:
describe another medical condition or disease where the primary system causes a serious problem with a secondary system
Answer:
Congestive heart failure
Explanation:
Congestive heart failure happens when your heart gets too weak to pump blood from the lungs out to the body. Pressure builds up in the heart which puts pressure on the blood vessels of the lungs. This will lead to leakage of the vessels and the fluids build up in the air sacs of the lungs. This condition is called pulmonary edema.
Pulmonary edema occurs when fluid builds up in the lungs making it hard to breathe. It may start out as running out of breath easily but if left untreated (both conditions) symptoms get worse over time.
120 g of KI at 0 °C solution is
Answer:
i dont care to you
Explanation:
cause you are tuyo
solution is 9°5
Which of the following is the smallest number?
100
1
.0035
.0000000000000000000003
Answer:
.0000000000000000000003
Explanation:
How deep is the real pond?
A. 24 cm
B. 63 cm
C. 18 cm
D. 7 cm
Answer:
24
Explanation:
The average size of most ponds is 10′ x 15′ (roughly 150 square feet) with the deepest point being 24″. If you have underwater shelves for plants they usually go 12″ down.
- BRAINLIEST answerer ❤️✌
can anyone send me the structure of iron ?
;
Answer:
HOPE IT HELPS
Explanation:
PLS MARK BRAINLIEST ^_^
Answer:
Here you go dear..
Here's the structure of iron you were talking about earlier..
(ㆁωㆁ)(◍•ᴗ•◍)
Explanation:
Hope it helps you..
Your welcome in advance..
(ㆁωㆁ)
marking brainliest hurry !
What does Newton's first law of motion state?
Every action has an equal and opposite reaction.
A body at rest will stay at rest until it is acted upon by another object.
The amount of force acting on an object is equal to its mass times its acceleration.
All objects that have mass attract each other with a force that depends on their mass.
Answer:
B. A body at rest will stay at rest until it is acted upon by another object
Explanation:
Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
please help my little brother on this I don't get it either free brainless
Answer:
igneous rock is the correct answer
What types of safety procedures need to be followed when handling and transporting nitric acid?
Answer:
wear safety glasses, a face shield, gloves.
Explanation:
Nitric Acid Safety, Handling & First Aid When handling nitric acid in the workplace, we strongly recommend you wear chemical safety glasses, a face shield for splash protection, gloves, and an approved vapor respirator if adequate ventilation is not available. I found this online. Hope it helps!
The (15-35-15) number on a bag of fertilizer is calculated by an outdated method. All modern fertilizers use PO43- as a source of phosphorus. Use your knowledge of the old methods to determine the moles of phosphorus found in 10.0 grams of (15-35-15)?
The (15-35-15) number on a bag of fertilizer is calculated by an outdated method. Using the knowledge of the old methods, the number of moles of phosphorus found in 10.0 grams of phosphorus is 0.05 mole.
The (15-35-15) number on the bag of fertilizer is used for:
Nitrogen 15 : Phosphorus pentoxide 35: potassium oxide 15Thus, in a 100-gram bag of fertilizer, there are 35 grams of phosphorus pentoxide P₂O₅.
∴
To determine the number of moles of 10 grams of phosphorus pentoxide in (15-35-15) bag of fertilizer, we have:
[tex]\mathbf{=10 \times \dfrac{35}{100} \ grams \ of \ P_2O_5}[/tex]
= 3.5 grams of P₂O₅
Recall that:
[tex]\mathbf{Number of moles = \dfrac{mass}{molar \ mass}}[/tex]
the molar mass of P₂O₅ = 142 g/mol∴
[tex]\mathbf{Number of moles = \dfrac{3.5\ g}{ 142 \ g/mol}}[/tex]
[tex]\mathbf{Number of moles = 0.0246 \ mol}[/tex]
Provided that 1 mole of P₂O₅ harbors 2 moles of phosphorus;
Then;
The number of phosphorus present in 10.0 grams of (15-35-15) fertilizer is:
= 0.0246 moles × 2
= 0.0492 moles
≅ 0.05 moles
Therefore, we can conclude that the number of moles of phosphorus found in 10.0 grams of (15-35-15) bag of fertilizer is 0.05 moles.
Learn more about phosphorus here:
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Moon rocks resemble rocks from which of the following layers of the earth?
Look at screen shot.
Answer:
If the cell was a city, what would the city have inside it for it to function as a cell?
Explanation:
The cell membrane can be a fence or wall around the city because it controls what enters and leaves the cell, and separates the cell from the outside.
The nucleus could be the city hall because it protects DNA and controls the cell (city)
The mitochondria could be the greenhouse because it makes ATP energy from sugar + 02
The chloroplasts could be a farm or garden because it is where photosynthesis takes place and makes energy + sugar from sunlight
The ribosomes could be the factory to make stuff because it makes proteins
The endoplasmic reticulum could be a kitchen or restaurant because it helps finish proteins, and makes membranes.
The golgi apparatus could be the postal office because it finishes packages and ships proteins
The vacuoles could be a water tank because it storages water
I hope this helps. It is basically as if something was turning into a city-type thing. Like Lysosome could be a recycling center in a city.
Q13. Which of the following is a balanced chemical equation for the reaction between potassium carbonate soletion and hyelrochlori acid. 1
Answer:
Below
Explanation:
2HCl + K2CO3 -> 2KCl + CO2 + H2O
Use the periodic table to answer the question.
A chemical reaction produces a molecule in which all of the atoms have a stable configuration. Which molecule could be the product of the reaction?
(1 point)
SiO
PH3
MgBr
KCl2
The product of this reaction is PH3. All of the atoms in PH3 have a stable configuration.
According to the octet rule, atoms are stable when they have two or eight electrons around their outermost shell. A stable configuration is one in which the outermost shell is fully filled with eight electrons.
The reason behind chemical combination is to enable atoms attain this stable configuration. If we look at the compound, PH3, we will notice that phosphorus has eight electrons around its outermost shell while each hydrogen atom has two electrons around its outermost shell hence all of the atoms have a stable configuration.
Learn more: https://brainly.com/question/10609459
Answer:ph3
Explanation:yeah
At what temperature will water begin to boil
Answer:
water will boil at 100 celcius or 212 farenheit
please give brainliest
Answer:
At 100° C or 373.15K
Explanation:
If Bromine has a charge of 1-, how many electrons does it have?
Answer:
35
Explanation:
The atomic number for bromine is 35, which means it has 35 protons in its atomic nuclei. A neutral bromine atom would also have 35 electrons. In order for a bromine atom to become a
1
−
bromide ion, it would have to gain an additional electron.
What type of element are the following elements?
A) Na
B) Со
C) Bi
D) O
✞What Is an Alloy?⭐⭐
Write the chemical formula for the ionic compound formed by aluminum and chlorine.
Answer:
AICI3
one aluminum and three chlorine
Answer:
→
[tex]{ \rm{AlCl _{3} }}[/tex]
Explanation:
Equation:
[tex]{ \rm{2Al_{(s) } + 3Cl _{2(g)} \dashrightarrow \: 2AlCl _{3(s)}}}[/tex]
What is the angle between the following two hybrid orbitals on the same atom?
(a) sp and sp hybrid orbitals:
degrees
(b) sp and sp hybrid orbitals:
es
degrees
(c) sp and sp2 hybrid orbitals:
degrees
Answer: a) sp and sp hybrid orbitals:
180 degrees
(b) sp and sp hybrid orbitals:
es
120 degrees
(c) sp and sp2 hybrid orbitals:
109.5 degrees
Explanation:
The angle between the following two hybrid orbitals on the same atom is sp and sp hybrid orbitals: 180°, sp and sp hybrid orbitals: 120° and sp and sp2 hybrid orbitals: 109.5°
What is hybrid orbitals?Hybrid orbitals are defined as the outcome of a model that generates a new set of orbitals by combining atomic orbitals on a single atom.
It can also be defined as a form of atomic orbital that emerges when two or more atomic orbitals of an isolated atom mix.
It can be defined as the forming new atomic orbitals by combining two or more common atomic orbitals.
The process which forms hybrid orbitals are known as hybridization.
There are mainly five types of hybridization.
LinearTrigonal planerTetrahedral Trigonal bipyramidal OctahedralThus, the angle between the following two hybrid orbitals on the same atom is sp and sp hybrid orbitals: 180°, sp and sp hybrid orbitals: 120° and sp and sp2 hybrid orbitals: 109.5°
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Describe the relationship between the state of matter of water (gas, liquid, solid) and the motion of the water molecules
Water has three states of matter namely gas, solid or ice form and liquid. Molecules in solid state are not able to move since they are tightly packed.
Molecules can move in liquid state and they moves easily in gaseous state.
What is states of matter?Every substance have three states, that are gas, liquid and solid. In solid state, molecules are tightly packed and are unable to move apart. In liquid state, molecules have some space to move and motion of liquid is easy.
The movement of molecules in a substance depends on the space allotted for them or called the volume. More volume between molecules, easy to move apart.
Gaseous state is composed of molecules located far apart from each other and they diffuse easily. Therefore, motion in three states of water is different and moves faster in gaseous state.
To learn more about states of matter, refer the link below:
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Which statement is an example of a scientific hypothesis?
A.
What type of fertilizer is best for growing beans?
B.
Only half of the bean plants grew over six inches.
C.
How long is the life cycle of a bean plant?
D.
Bean plants will grow best in well-drained soil.
Answer:
D
Explanation:
Si a un resorte se le cuelga una masa de 800 g y se deforma 50 cm. ¿Cuál será el valor de su constante en N/m? (g = 9.81m/s2).
Answer:
50cm
Explanation:
because thats the only thing i got
The following reaction represented oxidation of organic matter (CH2O) using nitrate ions.
If G° = -118.7Kj/mol at 25°C, calculate E°CELL and the equilibrium constant for this
reaction:
14 CH20 + 1/5 NO3 +1/5 H
= CO2 + 1/10 N2 +7/20 H2O
[5]
sorry but i don't know again sorry!
Molybdenum can form a wide series of halide compounds, including four different fluoride compounds. The percent by mass of molybdenum in the four compounds is 63.0%,
56.0%,
50.0%,
and 46.0%.
Determine the formula and name for each of the four different molybdenum fluorides.
The formula and names of the compounds are:
1. Formula of compound => MoF₃
Name of compound => Molybdenum trifluoride
2. Formula of compound => MoF₄
Name of compound => Molybdenum tetrafluoride
3. Formula of compound => MoF₅
Name of compound => Molybdenum pentafluoride
4. Formula of compound => MoF₆
Name of compound => Molybdenum hexafluoride
1. Determination of the name and formula of the molybdenum fluoride having 63.0% of molybdenum.
Molybdenum (Mo) = 63.0%
Fluorine (F) = 100 – 63 = 37%
Formula =?Mo = 63.0%
F = 37%
Divide by their molar mass
Mo = 63.0 / 96 = 0.656
F = 37 / 19 = 1.947
Divide by the smallest
Mo = 0.656 / 0.656 = 1
F = 1.947 / 0.656 = 3
Therefore,
Formula of compound => MoF₃
Name of compound => Molybdenum trifluoride
2. Determination of the name and formula of the molybdenum fluoride having 56.0% of molybdenum.
Molybdenum (Mo) = 56.0%,
Fluorine (F) = 100 – 56 = 44%
Formula =?Mo = 56%
F = 44%
Divide by their molar mass
Mo = 56 / 96 = 0.583
F = 44 / 19 = 2.316
Divide by the smallest
Mo = 0.583 / 0.583 = 1
F = 2.316 / 0.583 = 4
Therefore,
Formula of compound => MoF₄
Name of compound => Molybdenum tetrafluoride
3. Determination of the name and formula of the molybdenum fluoride having 50.0% of molybdenum.
Molybdenum (Mo) = 50.0%,
Fluorine (F) = 100 – 50 = 50%
Formula =?Mo = 50%
F = 50%
Divide by their molar mass
Mo = 50 / 96 = 0.520
F = 50 / 19 = 2.632
Divide by the smallest
Mo = 0.520 / 0.520 = 1
F = 2.632 / 0.520 = 5
Therefore,
Formula of compound => MoF₅
Name of compound => Molybdenum pentafluoride
4. Determination of the name and formula of the molybdenum fluoride having 46.0% of molybdenum.
Molybdenum (Mo) = 46.0%,
Fluorine (F) = 100 – 46 = 54%
Formula =?Mo = 46%
F = 54%
Divide by their molar mass
Mo = 46 / 96 = 0.479
F = 54 / 19 = 2.842
Divide by the smallest
Mo = 0.479 / 0.479 = 1
F = 2.842 / 0.479 = 6
Therefore,
Formula of compound => MoF₆
Name of compound => Molybdenum hexafluoride
Learn more: https://brainly.com/question/11185156
is mixing acid and base a chemical change or a physical change
Answer : chemical reaction
Mixing an acid with a base is a common chemical reaction.
Answer:
It is a chemical reaction.
Explanation:
Mixing acid and base is a common chemical reaction.
(I had my answer in the comments bc at the time I couldn't submit it as a answer so here ya go)
Hope this helps! :)
how many molecules of oxygen are needed to make 3.5 oxygens of water?
Answer:
57.6g
Explanation:
So, if in one mole of water, 16 g of oxygen atom is present. Then, in 3.6 moles of water, the mass of oxygen present will be 3.6×16=57.6g. Therefore, the amount of oxygen present in 3.6 g water is option (B)- 57.6 g.
Select the coefficients necessary to balance each equation. Choose a coefficient for every compound.
Photo included
Need help, please teach me how to solve it!
Answer:
See below
Explanation:
2C2H6 + 7O2 = 4CO2 + 6H2O
2C2H2 + 5O2 = 4CO2 + 2H2O
A lot of this is trial and error. I start from left to right. For the first reaction, you had
C2H6 + O2 = CO2 + H2O
You have 2 carbons on the left so you can try adding a 2 in front of the carbons on the right and keep going from there. Now you have
C2H6 + O2 = 2CO2 + H2O
You now have 2 C on each side. C2 is the same as 2C.
The next step is to look at the hydrogens on the left. You have 6 so you need 6 on the right. You can add a 3 in front of the H on the right. The H already has a subscript of a 2 so having the 3 in front will now make it 6H. You now have this
C2H6 + O2 = 2CO2 + 3H2O
So your C are equal (2 on each side) and your H is equal (6 on each side). All that is left is the O. So far you have 2 on the left but you have 7 on the right (4 from the 2CO2 and 3 more from 3H2O). Since you have an even number on one side and an odd number on the other, there is no way to make this work. So it's time to start over.
My next step was to put a 2 in front of C2H6 and keep going as we did above. Start with this
2C2H6 + O2 = CO2 + H2O
You have 4 C on the left. So you need to add a 4 in front of CO2 to get 4 C on the right. Now you have this
2C2H6 + O2 = 4CO2 + H2O
Now on the left you have 12 H (2 in front times the 6 subscript on the H). You need to have 12 on the right. We can get that by putting a 6 in front of the H2O ( again the 6 in front times the 2 subscript of the H is 12 total). You have this now
2C2H6 + O2 = 4CO2 + 6H2O
You now have 4 C on both sides, 12 H on both sides. All that is left now is the O.
On the right side, you have a total of 14 ( 8 from the 4CO2 and 6 from 6H2O). So you'd need to add 7 in front of the O2 to make it 14.
You're done. 4 C on both sides, 12 H on both sides and 14 O on both sides.
The second equation I just did the same process.
How are energy and work related?
O A. Work and energy are the same.
B. Work times energy is force.
C. Energy is the force needed to do work.
D. Energy is the capacity to do work.
SUBMI
Answer:
c
Explanation:
because u need the energy to be able to work
An image of Earth's layers is below
What is layer C?
Crust
Mantle
Inner core
Outer core
Answer:
the mantle is layer C.
Explanation:
the crust would be layer A. inner core would be layer D. outer core would be layer B.