Answer:
utcluclult
Explanation:
ciyiclyipc6ycpicyplciplcylpycioiycciptclyltcj"<&%(""%<(
Answer:
no WAYYYYYYY ITS SO EASY!!111!11
Explanation:
Each time a person walks into a room and tums on a light, a change in energy occurs. What is this change in energy?
electrical energy is converted into light energy
kinetic energy is converted and the potential energy
light energy is converted in mechanical energy
Chemical energy is converted into potential energy
Consider the equation for the formation of a kidney stone.
2Na3 PO4 (aq) + 3CaCl2 (aq) =
Ca3(PO4)2 (s) + 6NaCl (aq)
Is each reactant bonded ionically or covalently?
How do you know?
Answer:
Ionically, because they are ionic compounds
Marcus wants to use two objects to compare the sizes of a proton and an electron. If he uses a basketball for a proton, which object would best represent an electron?
A
a pea
B
a bowling ball
C
a soccer ball
D
a beach ball
Answer:
A
Explanation:
Can someone please help I don’t now which one to put
Answer:
2nd or 3rd dyfudhfkfhxhxhxjxjcjcifid
Calculate the molecular weight of 0.2g H3X solution if 50ml of this acid neutralized with 40ml of 0.03N Ca(oH)2 then calculate strength of this solution in ppm
Answer:
1. Molecular weight = 333.3 g/mol
2. Strenght = 2222.2 mg/L
Explanation:
First, we need to find molarity (M) from normality (N) as follows:
[tex] N = nM [/tex]
Where n is the number of OH⁻ = 2
[tex] M = \frac{N}{2} = \frac{0.03}{2} = 0.015 mol/L [/tex]
Now, when the H₃X solution is neutralized with Ca(OH)₂ we have:
[tex]\eta_{H_{3}X} = \eta_{Ca(OH)_{2}} = M_{Ca(OH)_{2}}*V_{Ca(OH)_{2}} = 0.015*0.04 = 6 \cdot 10^{-4} moles[/tex]
Hence, the molecular weight (MW) of H₃X is:
[tex] MW = \frac{m_{H_{3}X}}{\eta_{H_{3}X}} = \frac{0.2 g}{6 \cdot 10^{-4} moles} = 333.3 g/mol [/tex]
Finally, we can calculate the strength (S) of this solution in ppm as follows:
[tex] S = \frac{m}{V} = \frac{200 mg}{0.050 L + 0.040 L} = 2222.2 mg/L [/tex]
I hope it helps you!
Which of these is NOT a way to express probability?
A .1 in 4
B. 50 percent
c. 3/4
D. 25
Answer:
Option A.
Explanation:
Probability is expressed in percent, fraction or in whole numbers
The only one that does not express a probability is 25.
A one in four chance, a fifty percent chance, a three in four chance. These all could be probabilities.
25 doesn't express a probability.
If this is incorrect, please, don't refrain to tell me.
Which is a general property of cell membranes? a) Membranes contain more lipid than protein. b) Membrane proteins have a polar head and a non-polar tail. c) Membrane lipids are amphipathic. d) Membranes contain covalent bonds between fatty acids
Answer:
c) Membrane lipids are amphipathic.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, cytoskeleton, vesicles, golgi apparatus, and cell membrane.
Cell membrane is the wall of a cell and typically controls what leaves and enters the cell.
A general property of cell membranes is that membrane lipids are amphipathic. All the lipid molecules found in the cell membrane are amphipathic or amphiphilic, which means that they are "water loving" (hydrophilic) with a polar end or "water fearing" (hydrophobic) with non-polar end. Thus, membrane lipids have an end that's soluble in water (polar) while the other end is soluble in fat (non-polar).
The membrane lipids are amphipathic.
• In the majority of cell membranes in animals, lipids, that is, fatty molecules forms about 50 percent of the mass of the cell.
• All the molecules of lipid in a cell membrane are amphipathic, that is, they possess a polar end or hydrophilic and non-polar end or hydrophobic end.
• The phospholipids are the most abundant lipids found in the cell membrane.
• They have a polar head group and two hydrophobic hydrocarbon tails.
• It is the amphipathic nature and shape of the molecules of lipids, which makes them to produce bilayers spontaneously.
Thus, correct answer is option c, that is, membrane lipids are amphipathic.
To know more about:
https://brainly.com/question/12372995
PLEASE HELP!
The chemical formula of a compound provides information about the elements present in the compound and their ____
ratios. A) grams B) ratio C) mole D) empirical
Answer:
C. Mole
Explanation:
Chemical formula deals with mole number
- What is the percent yield if your actual yield is 39.78g and your theoretical
yield was 47.84 g?
i have extra points so giving points out to people who can answer these questions
HAS TO BE CORRECT
doing addison next
ill ask in comments who wants brainliest <3
1. what is charli d'amelio's favorite food
2.what is charli d'amelio's favorite color
3. how long has charli d'amelio been dancing for??
99 points
heres a rare from charli luvs
Answer:
Dunkin' Donuts
Purple
Charli began dancing at age 3, and was a trained competitive dancer for over 10 years prior to starting TikTok.
Explanation:
Answer:
pink
Explanation:
A low ph scale would indicate that the water is A. Neutral B. Basic C. Acidic
what's a vacuum exactly
Answer:
Vacuum: space in which there is no matter or in which the pressure is so low that any particles in the space do not affect any processes being carried on there It is a condition well below normal atmospheric pressure and is measured in units of pressure (the pascal).-the internet gave me this answer so..
Explanation:
hope this helps :)
1. Which of the following elements have atoms with a full shell of
valence electrons (1 point)
a. Lithium
b. Oxygen
c. Hydrogen
d. Neon
Answer:
The answer is neon.
Explanation:
Hope this helped Mark BRAINLEST!!!
A tank containing 5.00 L of nitrogen at 75.0 atm pressure and 28.0 C is left standing in sunlight. Its temperature rises to 50.0C. What is the pressure at this higher temperature?
Answer:
80.5 atm
Explanation:
First of all, we convert 28.0 °C and 50.0 °C into K:
28.0 + 273.16 = 301.16 K50.0 + 273.16 = 323.16 KTo answer this problem we'll use Gay-Lussac's Law, which states that:
T₁*P₂=T₂*P₁In this case:
T₁ = 301.16 KP₂ = ?T₂ = 323.16 KP₁ = 75.0 atmWe put the data:
301.16 K * P₂ = 323.16 K * 75.0 atmAnd solve for P₂:
P₂ = 80.5 atmThus, the correct answer is 80.5 atm.
What is the best way to statically charge an object,
Answer:Static electricity can be created by rubbing one object against another object.
Explanation: This is because the rubbing releases negative charges, called electrons, which can build up on one object to produce a static charge
does carbon dissolve in water
Answer:
yes
Explanation:
CO2 is soluble because water molecules are attracted to these polar areas. The bond between carbon
kinetic energy is the energy of ____ things
Answer:
moving things
Explanation:
kinetic energy is the energy of moving things
NaBr
what is the name for ionic compounds
Answer:
Its name is Sodium Bromide .
Answer:
=>. the chemical Name of NaBr
=>. sodium bromide
hope it helps
what are particles that differ in number between isotopes
Answer:
Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.
The sample of oxygen which represents the greatest mass is
A.) mole
B.) gram
C.) molecule
D.) liter
Answer:
A
Explanation:
A sorry if not correct
A bee buzzes inside a flower to drink some nectar. While there it touches the stamen. Later the bee goes to another flower and comes into contact with the flower's pistil. Which process of reproduction is this helping with?
QUESTION
A bee buzzes inside a flower to drink some nectar. While there it touches the stamen. Later the bee goes to another flower and comes into contact with the flower's pistil. Which process of reproduction is this helping with?
ANSWER
The bee is helping in pollination which is an important event in case of sexual reproduction in flowering plants.
Pollination is a part of pre-fertilisation ( gamete transfer ).
Pollination by insects ( most commonly bees ) is known as Entamophily
The reaction between sodium and chlorine that forms table salt is shown
_Na(s) + Cl2 (g) → _NaCl (3)
What coefficient should be added to the blanks to balance the equation?
А.
2
В.
1
2.
2
Answer: 2 Na (s) + Cl(g) -> 2 NaCl (s)
Explanation:
Give an example of a decomposer, and explain what would happen if decomposers were absent from a forest ecosystem. Provide evidence to support your claim and explain your reasoning
Answer: Bacteria, some insects, and fungal species are the decomposers of the dead and decaying matter.
Explanation:
The decomposers are the organisms which act and feed on the dead and decaying organic matter so as to obtain energy from it and degrade it to the simple forms that can be utilized by the plants. Bacteria, some insects and fungi that live in the soil and on the decaying matter. The fungi for example decay on the lignin present in the wood so helps in wood decomposition of trees. If the decomposer like fungi are absent the wood mass will not decompose and it will remain as waste and can be used by the plants in the form of nutrients.
A hydrochloric acid solution contains 36 percent HCl by mass. Calculate its
molality
In which ways are evaporation and condensation similar?
Both cause decrease in air temperature
Both cause increase in air temperature
Both are caused by the warming of the atmosphere
Both are caused by changes in heat energy
Answer:
Both are caused by changes in heat energy
Explanation:
When air gets hotter water will evaporate, when air gets cooler water will condensate.
Which of your recipes was the best?
Trial 1
Trial 2
Trial 3
Why is this your best recipe? What criteria did you meet?
Answer:
trial 1
Explanation:
trust
How many valence electrons are there in Se atom?
Answer:
4 valence electrons
Despite the fact that the word silicon has a ubiquitous affiliation with all things electronic, Si itself is not a good electrical conductor. It has 4 valence electrons, meaning that filling its outer shell it can form a very strong lattice with 4 neighboring Si atoms-with no un-bonded electrons remaining
Answer:
The numer of valence electrons is defined as the number of electrons present in the outer most shell of the atom.So, in the case if selenium, there are 6.
How much force is required to accelerate a 22 kg mass at 6 m/s2?s
Answer:
F=132k.gm/s^2Explanation:
F=m×af=22k.g×6m/s^2f=132k.gm/s^2Between what time interval was the object moving the slowest?
Between what time interval was the object moving the fastest
Answer:
from 1 to 2 hour the object was moving the slowestfrom 4 to 5 hours the object was moving the fastestHow many grams of potassium chloride are in 4.25 x 1023 molecules?
Do a quick conversion: 1 moles Potassium Chloride = 74.5513 gram using the molecular weight calculator and the molar mass of KCl.