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Related Questions
(1.) If at 100.0 mL solution contains 0.850 moles of a solute, what is the molarity ?
(2.) If the molarity of a solution is 12 M and the volume of the solution is 1.0 L, how many moles of solute does the solution contain ?
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Answer:
See below
Explanation:
1) Moles / volume
.85 mole / .1 liter = 8.5 M
2) 12 moles are contained in one liter
.85 mole / .1 liter = 8.5 M
2) 12 moles are contained in one liter
Calculate the acceleration of an 80 kg sprinter if the force on the sprinter is 80 N
Answers
Answer:
240N
F=ma, a = vf-vi / t
Explanation:
80= 80 x acceleration
Acceleration = 1 m/s^2
Neutron stars are incredibly dense. Describe a neutron star in terms of a sugar cube.
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Can someone help me with this
why do you think mauna loa erupts periodically instead of steadily
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1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
Answers
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.
Animals respond to threats in their environment by attacking or escaping. Either response is the result, mostly, of interactions between -
Answers
Answer:
escaping
Explanation:
piece of roasted salted fish is put in a mouse trap. explainwhy the mouse comes to the trap
Answers
Answer: Food
Explanation:
The rat smells the food or sees the food it goes towards the food to eat it.
A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 16 g and a volume of 2 cm3. What is the density of the mineral sample?
Answers
Answer:
8g/cm³
Explanation:
density is mass per unit volume , it is measured in grams per unit volume
GIVING BRAINLIEST 5 STARS AND HEART!
Answer in your OWN WORDS!
A gardener discovers that her prize hydrangeas have turned from pink to blue. What can you say about the soil in which the flowers are growing?
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Generally speaking, acidic soil, with a pH lower than 6.0, yields blue or lavender-blue hydrangea blooms. Alkaline soil, with a pH above 7.0, promotes pinks and reds. With a pH between 6 and 7, the blooms turn purple or bluish-pink. To lower your pH, add garden sulfur or aluminum sulfate to your soil.
The secret's in the soil
Let’s look at why pH is so important.
Most major plant nutrients are more accessible at a pH of 6 to 6.5. A pH that is too high or too low can keep plants from absorbing nutrients from the soil. The nutrients are unavailable — or not absorbable — to the plant because of soil's chemistry. This problem can manifest itself in a variety of ways, but in the case of hydrangeas, the bloom color changes.
Color variation in hydrangeas is due to the presence or absence of aluminum compounds in the flowers. If aluminum is present, the color is blue. If it is present in small quantities, the color is variable between pink and blue. If aluminum is absent, the flowers are pink.
Answer:
There is somehting in the water or the soil
Explanation:
Which choice best describes the Law of Conservation of Energy? Group of answer choices Energy is lost and cannot be recovered. Energy cannot be created or destroyed. Energy cannot be transformed. Once energy is used, it cannot be used again.
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What is the number of molecule(s)?
I will give you brainliest
Please explain for all of these 1-5.
1. 4NHCO3
2. 3CaCO3
3. 5NaC2H3O
4. 6NH3
5. 2CaCl2O2
Answers
Answer:
4
Explanation:
Which statement describes an attribute of an artesian well?
O requires a bucket
O uses natural pressure
O needs a mechanical pump
O is heated by hot rocks or magma
Please only give a ONE answer.
i said/asked calmly
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The statement that describes an attribute of an artesian well is B. Uses natural pressure.
Artesian wells rely on natural pressure by accessing an underground water source that is enclosed between layers of impermeable rock or clay. The water within the aquifer is naturally pressurized due to the weight of the overlying rock or the slope of the land.
When a well is drilled into the aquifer, this existing pressure allows the water to rise to the surface without the need for a mechanical pump.
This utilization of natural pressure distinguishes artesian wells from other types of wells, as they do not require artificial pumping mechanisms to extract water.
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During a science lab investigating chemical reactions, you mix 15 grams of baking soda with 20 grams of vinegar into a container that has a mass of 55 grams. After the substances react what should the total mass of the products be after the reaction?
35
55
90
Cannot be determined
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This photo shows a kind of reproduction. Which of the following describes this type of reproduction?
A. Two parents are required to produce this offspring.
B. Each offspring has a different combination of genes.
C. The offspring have identical genes.
D. Parents make reproductive cells with only half of their genes.
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A. Two parents are required to produce this offspring.
plssss help it will be real;ly nice of you
Answers
MA= 600N/30N
MA= 20N
Answer:
ExplainMA formula: output force/input force
MA= 600N/30N
MA= 20Nation:
Write equations to show the effect of heat on of the following:
1. Sodium hydrogen carbonate
2.Silver nitrate
3.Anhydrous iron (II) sulphate
Answers
Answer:
2: Silver nitrate Is answer.
The heat reacts with the reactants to undergo thermal decomposition. When sodium hydrogen carbonate undergoes thermal decomposition produces sodium carbonate along with carbon dioxide and water.
What is thermal decomposition?Thermal decomposition is a chemical reaction where the reactants under the presence of high temperature or heat get split to form two or more products. When Sodium hydrogen carbonate (sodium bicarbonate) is heated the reaction occurs as,
2 NaHCO₃ (s) + Δ → Na₂CO₃ (s) + CO₂ (g) + H₂O (l)
When Silver nitrate is treated with heat then silver, nitrogen dioxide, and oxygen are produced as,
2AgNO₃ (s) + Δ → 2Ag (s) + 2NO₂ (g) + O₂ (g)
Similarly, Anhydrous iron (II) sulfate under thermal decomposition produces ferric oxide, sulfur dioxide, and sulfite as,
2FeSO₄ (s) + Δ → Fe₂O₃ (s) + SO₂ (g) +SO₃ (g)
Therefore, the reactants under the heat show thermal decomposition.
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it was observed that the atoms of a substance had so much energy that it separated the electrons and protons of the atom what is most likely the state of matter of the substance? gas liquid plasma solid
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Answer:
Plasma is a substance which is extremely hot. The heat present in plasma, a gas, is provided as energy in order to split electrons and protons apart. Therefore, ions and electrons are formed as products.
Explanation:
The state of matter of the substance where in the electrons and protons are separated from the atom is plasma.
What is matter?
Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume . The matter is composed up of atoms which may or not be of same type.
Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.
The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.Matter can neither be created nor destroyed which is given by the law of conservation of matter.
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Phenomenon: Why are seat belts necessary? Seat belts have been placed in cars since the 1960’s. They are a safety feature used to decrease the forces in a car crash. According to Newton’s 1st Law of Motion, identify which of the following statements explains how seat belts lessen the effects of a crash
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There are 2 main types of _______. One is a _______, where electrons are shared between atoms. The other is an _______, where one atom loses an electron to become a _______ charged ion, and the other atom gains the elctron to become a _________ charged ion.
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Hello..!
There are 2 main types of ions one is an atom where the electrons are shared between the atoms. the other is an electron where one atom loses an electron to become a neutral in a charged ion, and the other atom gains the electron to become a charged lon anion.
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Ions with a positive charge are known as cations. Those that are negatively charged are called anions.
¿Doubts? in the comments Greetings.
The two main types of bonds formed between atoms are ionic bonds and covalent bonds. An ionic bond is formed when one atom accepts or donates one or more of its valence electrons to another atom. A covalent bond is formed when atoms share valence electrons.
Energy can be neither created nor destroyed. This fact means that even though energy sources can be depleted (used up), the energy in them is not destroyed. Instead, it is transformed to other forms of energy. And almost all energy resources here on Earth can have their energy traced back to the Sun’s gravitational or light energy.
Electricity is often thought of as a secondary source of energy because it must be gained by transforming some other kind of energy (a primary source). Think about where the electricity generated by a wind turbine comes from. Describe the path that wind energy takes from the Sun’s light to electricity.
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Hope this helps :)
List examples of organisms from the movie that represent each of the six kingdoms. Monera (Archaebacteria/Eubacteria): Protista: Fungi: Plantae: Animalia
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Answer:
since the movie was unlisted, i'm unable to provide you with a proper answer? sorry
Explanation:
1) Archaea / Bacteria
2) Protists
3) Fungus
4) Plant
5) Animal
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Which of the following is not a physical change?
A.sublimation of iodine C. tearing a piece of cloth
B. burning of wax in a candle D. dissolving sugar in a tea
Answers
Answer: B. Burning of wax in a candle
Explanation: Burning of wax is a chemical change due to the combustion of fuel in the presence of oxygen to produce carbon dioxide. A physical change part of it is when the wax of candle melts and the shape is lost.
Please help me por favor :'(
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Please help!
1.Ionic compounds are formed when.
-metal reacts with non metal
-metal reacts with metal
-when non-metal reacts with non-metal
2.True or false. Ionic bonds are electrostatic forces.
-True
-False
3.Sodium loses one electron when it reacts with.
-Magnesium
-potassium
-Chlorine
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2- true
3- chlorine
2. true
3. chlorine
Calculate the volume (in cm3
) of 54 g
of water at 1 ∘C
.
Express the volume in cubic centimeters to two significant figures.
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How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
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Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
———————————
(1/12)th Mass of one C12 atom
Which choice describes an organism found in the understory of a rainforest? Responses
A. Palms and other small trees
B. Very tall trees
C. Bacteria
D. Thick, woody vines
Answers
Answer: Palms and other small trees
Explanation:
Answer:
A. Palms and other small trees
Explanation:
Understory Layer
Located several meters below the canopy, the understory is an even darker, stiller, and more humid environment. Plants here, such as palms and philodendrons, are much shorter and have larger leaves than plants that dominate the canopy. Understory plants’ large leaves catch the minimal sunlight reaching beyond the dense canopy.
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If you put a hot dog into piranha solution, what happens?
it dissolves
becomes electroplated with salt
noithing - nonreactive
produces carbon triethylium oxide gas
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Answer:
3
Explanation:
More scientificly explained
Please help with questions 11-13! I’ll give brainliest
Answers
11- 3
12- 4
13- 2
11- 3
12- 4
13- 2 hope this helps
Which of the following shows the correct path of blood through the heart and lungs?
A.
right atrium, left atrium, lungs, right ventricle, left ventricle
B.
right atrium, right ventricle, lungs, left atrium, left ventricle
C.
right ventricle, left ventricle, lungs, right ventricle, right atrium
D.
right ventricle, right atrium, lungs, left ventricle, left atrium
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Answer:
Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. Blood leaves the heart through the aortic valve, into the aorta and to the body. This pattern is repeated, causing blood to flow continuously to the heart, lungs and body.
Explanation:
also, this means D
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The correct path of blood through the heart and lungs is right atrium, right ventricle, lungs, left atrium, left ventricle.
What is blood circulation?The circulatory system (cardiovascular system) transports oxygen-rich blood from the heart to the lungs. The heart then pumps oxygenated blood throughout the body via arteries.
By following the below path blood will circulate:
From the right atrium of heart blood comes to the right ventricle.From the right ventricle to the lungs.From lungs goes to the left atrium and then to the left ventricle.Hence correct sequence is right atrium, right ventricle, lungs, left atrium, left ventricle.
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