Answer:
The answer is option B, that is, it has two oxygen atoms.
Please help!!
It’s due today
Answer:
There is nothing with data to help us complete this chart
THIS IS BAD. THIS IS REALLY BAD
In which type of reaction is ATP the driving force?
O
A. anabolism only
o
B. catabolism only
O
C. both anabolism and catabolism
D. neither anabolism nor catabolism
HELP PLEASE!!
As the blood travels through your body, it _______.
A. picks up nutrients, water, and waste materials
B. pulmonary circulation
C. the lungs, where it picks up oxygen again
D. capillaries
E. 5
F. systemic circulation
Answer:
C. the lungs where it picks up oxygen again
3. What is the best description of an ionic bond?
A. electrostatic force of attraction between positive and negative ions
B. electrostatic force of repulsion between ions of the same charge
C. nuclear force of attraction between protons of different atoms
D. nuclear force of repulsion between protons of different atoms
The power has gone out and you find a flashlight that uses batteries. When you turn on the flashlight, you are transforming:
1. What do you observe when you poor a hot into the glass
containing intant coffee?
Answer:
The water in glass turns dark brown.
This is due to diffusion where the coffee molecules move from the region of their high concentration to a region of their lower concentration in water.
Answer:
The instant coffee acts as a solute when hot water (the solvent) is poured. The instant coffee quickly dissolves and makes a solution.
Explanation:
Determine the charge of each ion.
al oxygen ion with 10 electrons
(b) aluminum ion with 10 electrons
(c) titanium ion with 18 electrons
(d) iodine ion with 54 electrons
Answer:
(a) ==> O²-
(b) ==> Al³+
(c) ==> Ti²+
(d) ==> I-
3. __CH4 + __O2-> __CO2 + __H2O
4. __K + __H2O-> __KOH + __H2
Answer:
3: 1 CH4+ 2 O2-> 1 CO2 + 2 H2O
4: 2 K+ 2 H2O -> 2 KOH+ 1 H2
Explanation:
What number do we use to represent the connection of a solid, liquid, or solvent?
Answer:Molarity tells us the number of moles of solute in exactly one liter of a solution. (Note that molarity is spelled with an "r" and is represented by a capital M.) We need two pieces of information to calculate the molarity of a solute in a solution: The moles of solute present in the solution
Explanation:
HELP ME PLZ IT WILL MEAN A LOT
Answer:
1. B
2.C
Explanation:
I just used logic, it's been a while since I've done this but right now I'm in Honors Chemistry and I think I have the qualifications to answer this question. Sorry if I'm wrong.
If a concentrated solution of acetic acid is 99.5 % HC2 H3 O2 and has a density of 1.05 g/mL, what is the concentration of this acid in moles per litre?
Answer:
[CH₃COOH] = 17.4 M
Explanation:
Acetic acid → CH₃COOH
Molar mass → 60 g/mol
99.5% is percent by mass concentration. It means that 99.5 grams of solute are contained in 100g of solution.
Density → 1.05 g/mL. This data is always referred to solution, not solute!.
We determine solution's volume:
1.05 g/mL = 100 g / V → V = 100 g /1.05 g/mL → 95.2 mL
Now we know, that 99.5 g of acetic acid are contained in 95.2 mL
Let's convert to mmoles → 99.5 g / 60 g/mol = 1.66 moles
We convert solution's volume to L → 95.2 mL . 1L / 1000 mL = 0.0952 L
M (mol/L) = 1.66 mol / 0.0952 L = 17.4 M
___ and ___ are located in the nucleus of the atom while ____ exist in orbitals in the empty space outside of the nucleus
Answer:
Neutrons and Protons, Electrons
Explanation:
Neutrons and protons are in the inside as electrons orbit around it in a circular pattern
2. How are UVC rays different from UVA and UVB rays?
a. UVC rays are deflected by earth's atmosphere; UVA and UVB rays aren't
b. UVC rays can penetrate all the layers of your skin; UVA and UVB rays don't
c. UVC rays contain very little energy; UVA and UVB rays are very powerful
d. Sunblock can protect you against UVC rays, but not UVA and UVB rays
Answer: A.. for sure
Explanation:
These two finches share a common ancestor from South America. What is the most likely way that one ancestral finch species will develop into two distinct species?
A The ancestral species was genetically engineered to become two new species
B Groups of the ancestral species became isolated and adapted to different environments.
C. Two individual birds acquired many spontaneous mutations.
D. The ancestral species mated with other species and the offspring resulted in two new species.
Answer:
The correct answer is - B. Groups of the ancestral species became isolated and adapted to different environments.
Explanation:
Two finches Warbler Finch and Woodpecker Finch are two distinct finches are finches from the Galapagos Islands. Both of these finches have a common ancestor from South America.
The most likely explanation of developing two distinct species from an ancestral finch is by bein isolated and developed or adapted according to the challenges and environmental conditions and ultimately become different species after several generations.
Compare and contrast atoms and molecules. Cite specific examples from the readings, as well as what you may already know, to support your comparison.
Answer:
The main difference between an atom and a molecule lies in the size: while the atom is the smallest unit into which matter can be divided into any of its states, a molecule is the union of a group of atoms, that is, this composed of several atoms. Thus, for example, a water molecule is composed of two hydrogen atoms and one oxygen atom (H2O). Therefore, it can be said that atoms are the smallest unit in which the chemical elements of the world can be divided, while molecules are the particles of matter that are formed through the combination of these elements.
define the clinical thermometer
Answer:
a small medical thermometer with a short but finely calibrated range, for taking a person's temperature.
Answer:
Thermometer which are used in clinical to measure the temperature of human body is called clinical thermometer.
What happened to your heart rate? What does the increased heart rate tell us about the circulatory system? Why do you think the circulatory system was pumping blood faster when you were running?
Pls help ill give brainliest
SOMEONE HELP PLEASE!
Answer:
The nose consists of the visible external nose and the internal nasal cavity. The nasal septum divides the nasal cavity into right and left sides. Air enters two openings, the external nares (nostrils; singular, naris), and passes into the vestibule and through passages called meatuses. The bony walls of the meatuses, called concha, are formed by facial bones (the inferior nasal concha and the ethmoid bone). From the meatuses, air then funnels into two (left and right) internal nares. Hair, mucus, blood capillaries, and cilia that line the nasal cavity filter, moisten, warm, and eliminate debris from the passing air.
The pharynx (throat) consists of the following three regions, listed in order through which incoming air passes:
The nasopharynx receives the incoming air from the two internal nares. The two auditory tubes that equalize air pressure in the middle ear also enter here. The pharyngeal tonsil (adenoid) lies at the back of the nasopharynx.
The oropharyrnx receives air from the nasopharynx and food from the oral cavity. The palatine and lingual tonsils are located here.
The laryngopharynx passes food to the esophagus and air to the larynx.
The larynx receives air from the laryngopharynx. It consists of several pieces of cartilage that are joined by membranes and ligaments, shown in Figure 2:
The epiglottis, the first piece of cartilage of the larynx, is a flexible flap that covers the glottis, the upper region of the larynx, during swallowing to prevent the entrance of food.
The thyroid cartilage protects the front of the larynx. A forward projection of this cartilage appears as the Adam's apple (anatomically known as the laryngeal prominence).
The paired arytenoid cartilages in the rear are horizontally attached to the thyroid cartilage in the front by folds of mucous membranes. The upper vestibular folds (false vocal cords) contain muscle fibers that bring the folds together and allow the breath to be held during periods of muscular pressure on the thoracic cavity (straining while defecating or lifting a heavy object, for example). The lower vocal folds (true vocal cords) contain elastic ligaments that vibrate when skeletal muscles move them into the path of outgoing air. Various sounds, including speech, are produced in this manner.
The cricoid cartilage, the paired cuneiform cartilages, and the paired corniculate cartilages are the remaining cartilages supporting the larynx.
The trachea (windpipe) is a flexible tube, 10 to 12 cm (4 inches) long and 2.5 cm (1 inch) in diameter (Figure 2).
The mucosa is the inner layer of the trachea. It contains mucus‐producing goblet cells and pseudostratified ciliated epithelium. The movement of the cilia sweeps debris away from the lungs toward the pharynx.
The submucosa is a layer of areolar connective tissue that surrounds the mucosa.
Hyaline cartilage forms 16 to 20 C‐shaped rings that wrap around the submucosa. The rigid rings prevent the trachea from collapsing during inspiration.
The adventitia is the outermost layer of the trachea. It consists of areolar connective tissue.
The primary bronchi are two tubes that branch from the trachea to the left and right lungs.
Inside the lungs, each primary bronchus divides repeatedly into branches of smaller diameters, forming secondary (lobar) bronchi, tertiary (segmental) bronchi, and numerous orders of bronchioles (1 mm or less in diameter), including terminal bronchioles (0.5 mm in diameter) and microscopic respiratory bronchioles. The wall of the primary bronchi is constructed like the trachea, but as the branches of the tree get smaller, the cartilaginous rings and the mucosa are replaced by smooth muscle.
Alveolar ducts are the final branches of the bronchial tree. Each alveolar duct has enlarged, bubblelike swellings along its length. Each swelling is called an alveolus. Some adjacent alveoli are connected by alveolar pores.
The respiratory membrane consists of the alveolar and capillary walls. Gas exchange occurs across this membrane. Characteristics of this membrane follow:
Type I cells are thin, squamous epithelial cells that constitute the primary cell type of the alveolar wall. Oxygen diffusion occurs across these cells.
Type II cells are cuboidal epithelial cells that are interspersed among the type I cells. Type II cells secrete pulmonary surfactant (a phospholipid bound to a protein) that reduces the surface tension of the moisture that covers the alveolar walls. A reduction in surface tension permits oxygen to diffuse more easily into the moisture. A lower surface tension also prevents the moisture on opposite walls of an alveolus or alveolar duct from cohering and causing the minute airway to collapse.
Alveolar macrophage cells (dust cells) wander among the other cells of the alveolar wall, removing debris and microorganisms.
HELP PLZZZZZZZZZZZZZ I WILL GIVE BRAINLIST!!!!!!!!!!!
If you place Alka -Seltzer tablets in a closed container of water, the tablets effervescence then produce a gas. What will eventually happen inside this closed container?
A. Not enough information to determine.
B. The pressure decreases.
C. The pressure increases.
D. The pressure remains the same.
Answer:
c the pressure increases
A ball, starting from rest at Position 1, rolls down and then up a curved track towards Position 5. When it reaches Position 5, it rolls back down the track
2
Which description below is most consistent with what you can expect from the ball's motion?
The ball will roll as high as Position 1 since energy cannot be created or destroyed.
The ball will roll past Position 1 since energy cannot be created or destroyed.
The ball will roll as high as Position 2 since some of the energy will be transformed to heat,
The ball will roll as high as Position 3 since that position has the least potential energy.
Kk
Answer:
D. The ball will roll as high as Position 3 since that position has the least potential energy.
Explanation:
i am not sure that it's is right or wrong
A student is drinking a cup of hot chocolate as they sit by a campfire on a chilly evening. They know that the cup of hot chocolate transfers thermal energy to the surrounding air. The heated air over their cup of hot chocolate expands and rises and is replaced by cooler, denser air.
This method of energy transfer is —
Answer:
A student is drinking a cup of hot chocolate as they sit by a campfire on a chilly evening. They know that the cup of hot chocolate transfers thermal energy to the surrounding air. The heated air over their cup of hot chocolate expands and rises and is replaced by cooler, denser air.
This method of energy transfer is
Explanation:
Answer:
radiation
Explanation:
radiation is when an existing heat source spreads heat to its surroundings
What does a dam generating electricity from water flowing downhill show?
how systems take advantage of energy flowing from low to high
how systems take advantage of energy flowing from high to low
how systems violate the law of the second law of thermodynamics
Answer: the 3 one
Explanation: i just know
Answer:
how systems violate the law of the second law of thermodynamics
Explanation:
i had to take this quiz it is the right answer..
How many moles of Ca3N2 will be produced if you react 6.3 moles of Calcium with an excess (more than you need) of Nitrogen?
3Ca + N2→ Ca3N2
a) 18.9 moles of Ca3N2
b) 6.3 moles of Ca3N2
c) 2.1 moles of Ca3N2
Answer:
C
Explanation:
For every mol of Ca3N2 produced, you will need 3 mols of Ca
So the answer can be set up using a proportion.
3/1 = 6.3 / x Cross multiply
3x = 6.3 *1 Divide by 3
3x/3 = 6.3/3
x = 2.1
The answer is C
2.1 moles of Ca3N2 will be produced if you react 6.3 moles of Calcium with an excess nitrogen. Details about stoichiometry can he be found below.
How to calculate number of moles?The number of moles of a compound can be calculated as follows:
The chemical reaction between calcium and nitrogen is given as follows:
3Ca + N2→ Ca3N2
Based on the above reaction, 3 moles of calcium forms 1 mole of Ca3N2
Hence, 6.3 moles of calcium will produce 6.3/3
= 2.1 moles of Ca3N2
Therefore, 2.1 moles of Ca3N2 will be produced if you react 6.3 moles of calcium with an excess nitrogen.
Learn more about stoichiometry at: https://brainly.com/question/9743981
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Name a famous scientists and why they're
famous.
Answer:
Nikola Tesla
Explanation:
He made electricity major, he invented the first AC, and developed AC generation and transmission tech.
Photosynthesis requires light, water, and CO2 to work. When one of these factors is in short supply, it is called a limiting factor. Temperature can also be a limiting factor when it is too hot or too cold for photosynthesis to work well. If you are trying to grow plants in a greenhouse, why is it important to know the limiting factor?
A farmer can be more successful in understanding which plant produces and how to grow plants with a higher degree of photosynthesis with less material and time exhaustion, by recognizing what the limiting factor is.
Hope this helps! Please correct me if I'm wrong :)
3 , from
lowest to highest: A) Exosphere; B) Stratosphere; C)
Troposphere
A
A, C, B
B
B, A, C
С
C, B, A
D
C, A, B
Answer:
troposphere
stratosphere
exosphere
The sun is located in the center of our solar system. Where is the sun located in our disc-shaped
galaxy?
*Answer:-*
The sun is about 1/3 the distance from the center of the Milky Way galaxy to its outer edges. It's located in a smaller spiral arm, between two large arms, called the Orion Arm.
What are the three properties of waves?
Answer: amplitude, wavelength, and frequency.
Explanation:
A scientist took notes about the fossil in the picture.
Notes:
1. The body is shaped like a fish.
2. The body has a tail shaped like a fish's tail.
3. The body has a spine and ribs.
Where is the most likely place that this animal lived long ago?
O A. desert
O B. forest
Ос.
mountain
OD. Ocean
Answer:
b. forest ....
I think ansesters also lived in forest by wearing leaves like their clothes .... etc
You have about ______ liters of blood in your body.
A. picks up nutrients, water, and waste materials
B. pulmonary circulation
C. the lungs, where it picks up oxygen again
D. capillaries
E. 5
F. systemic circulation
Answer:
E
Explanation:
