If two identical atoms are bonded together, what kind of molecule is formed?
A. A bent, nonpolar molecule
B. A linear, polar molecule
C. A linear, nonpolar molecule
D. A linear, ionic molecule
Answers
Answer:
C. A linear, nonpolar molecule
Explanation:
Molecules which are alike usually have the same degree of pull which results in them sharing electrons. This sharing of electrons is known as the molecules exhibiting Covalent bonding between them.
The equal pull also results in the cancelling out of electrons and favoring non polar bonds due to the absence of free electrons which would have been able to interact with H2O in a polar binding system.
Answer:
C
Explanation:
APEX
Related Questions
How is a comet different from a star?
Answers
Explanation:
Bottom line: Most asteroids are rocky bodies that lie within the asteroid belt while comets are dirty snowballs from the Oort Cloud, with some objects acting like a hybrid of these two types.
Use the information about igneous rocks A-D to classify each one as intrusive or extrusive and basaltic or granitic. Fill in the
chart with A, B, C, or D.
Rock A-dark-colored large grains
Rock B-large crystals, high percentage of silica
Rock C-fine-grained texture, light-colored
Rock D—from Hawaiian volcano area, no visible crystals
Extrusive
Intrusive
1.
2.
Basaltic
Granitic
3.
4.
Answers
Answer:
1. D 2.. A 3. C 4. B
Explanation:
just took the quiz
We can classify each rock as intrusive or extrusive and basaltic or granitic as follows; Rock A - Extrusive, Basaltic, Rock B - Intrusive, Granitic, Rock C - Extrusive, Basaltic, and Rock D - Extrusive, Basaltic.
Rock A - Extrusive, Basaltic
Rock A is described as having dark-colored large grains, which indicates a fine-grained texture, typical of extrusive rocks. The presence of dark-colored large grains suggests a basaltic composition.
Rock B - Intrusive, Granitic
Rock B is described as having large crystals and a high percentage of silica, which suggests a coarse-grained texture, typical of intrusive rocks. The high silica content and large crystals indicate a granitic composition.
Rock C - Extrusive, Basaltic
Rock C is described as having a fine-grained texture and being light-colored, which are characteristic features of extrusive rocks. The fine-grained texture suggests a rapid cooling, typical of extrusive rocks, and the light color is indicative of a basaltic composition.
Rock D - Extrusive, Basaltic
Rock D is described as being from the Hawaiian volcano area and having no visible crystals. This indicates a glassy texture, typical of rapidly cooled extrusive rocks. The origin from a volcanic area and glassy texture suggest a basaltic composition.
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What are 6 definitions of mole in chemistry please help
Answers
Answer:
a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
Explanation:
The reaction between a strong acid and a weak base produces a salt, but water is not usually formed because:
the reaction is too hot and water evaporates
there is no hydrogen present to form water
the acid is not strong enough to form water
weak bases tend not to be hydroxides
Answers
Answer:
3
Explanation:
Define physical and chemical properties, provide three examples of each, DISCUSS THEIR REVERS ABILITIES, and
explain the fundamental differences between them.
I really need the reverse abilities.
Answers
Explanation:
the physical and chemical has different meaning
and the three examples are to discuss, reverse
and the ability.and to reverse the ability is to provide
the physical and chemical definement.
Does not letting reactants in a chemical reaction have enough time to fully react count as human error in a lab?
Answers
Yes, not allowing reactants in a to have enough time to fully react can count as human error in a lab. In chemistry, reaction time is an essential factor in determining the completeness and efficiency of a chemical reaction.
If the reactants are not given sufficient time to react, the reaction may be incomplete, leading to inaccurate or inconsistent results. This can happen due to human error, such as not monitoring the reaction time or not following the reaction protocol correctly.
Therefore, ensuring proper reaction time is crucial to obtain reliable and accurate results in a lab.
What should you do if you are using a balance that has persistent fluctuations in mass?.
Answers
When using a balance that has persistent fluctuations in mass it is best to
contact your Teaching assistant or instructor to adjust the balance.
What is a Balance?A balance is a tool which is commonly used in the laboratory to measure
the mass of a substance. This is usually done by placing the mass on it and recording the reading.
In cases where balance that has persistent fluctuations in mass it is best to
contact your Teaching assistant or instructor to adjust the balance which
could be done by using the adjustment knob etc.
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foundations of biology (biol:1411) project 3 writing assignment
Answers
The foundation of biology lies in the study of cells as the basic units of life and the principles of evolution that explain the diversity and adaptation of organisms.
The foundation of biology encompasses several fundamental principles and concepts that form the basis of our understanding of living organisms and their processes. Here are some key foundations of biology:
Cell Theory: The cell theory states that all living organisms are composed of cells, and cells are the basic structural and functional units of life. Cells can be either prokaryotic (lacking a nucleus) or eukaryotic (containing a nucleus).
Evolution: Evolutionary theory explains the diversity of life and the mechanisms by which species change over time. It is based on the principles of variation, inheritance, and natural selection proposed by Charles Darwin. Evolutionary processes drive the adaptation and development of new species.
Genetics: Genetics is the study of heredity and how traits are passed from one generation to the next. It explores the structure and function of genes, DNA, and chromosomes. The discovery of DNA as the genetic material and the understanding of genetic inheritance are fundamental to biology.
Homeostasis: Homeostasis refers to the ability of living organisms to maintain internal stability and balance despite changes in the external environment. It involves various regulatory mechanisms to maintain optimal conditions for cellular function and overall organismal well-being.
Energy and Metabolism: Living organisms require energy to carry out vital processes. The study of metabolism examines how organisms obtain, transform, and utilize energy. Photosynthesis in plants and cellular respiration in both plants and animals are essential processes in energy conversion.
Structure and Function: The relationship between structure and function is a fundamental principle in biology. The structure of biological molecules, cells, tissues, and organs is intimately linked to their specific functions and interactions within living organisms.
Interactions and Interdependence: Biology recognizes the interconnectedness of living organisms and their environments. Ecological concepts, such as food webs, energy flow, and symbiotic relationships, explore the interactions and interdependence of species within ecosystems.
These are just a few foundational principles of biology that underpin our understanding of life. The field of biology continues to expand and evolve as new discoveries are made and our knowledge of living systems deepens.
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How many moles of hydrogen are needed in 100g of water
Answers
200 g of just H
100 g of H2
g/what is the orbital hybridization on the central atom for a molecule with a square pyramidal molecular geometry?
Answers
The orbital hybridization on the central atom for a molecule with a square pyramidal molecular geometry is sp3d. This hybridization occurs when a central atom has five hybrid orbitals that are used to form bonds with other atoms.
In the case of square pyramidal geometry, the central atom is surrounded by five ligands and one lone pair, resulting in a trigonal bipyramidal arrangement.
The hybridization process involves the mixing of the central atom's s, p, and d orbitals to form five hybrid orbitals with equivalent energy levels. These hybrid orbitals have different orientations in space, with three orbitals arranged in a trigonal plane and two orbitals oriented perpendicular to the plane.
The five hybrid orbitals then overlap with the ligand orbitals to form five σ bonds. The lone pair occupies one of the hybrid orbitals, resulting in a square pyramidal molecular geometry.
This type of hybridization is common in molecules with a coordination number of five and results in strong and stable bonding between the central atom and its ligands.
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CaCl: Will give brainliest
Answers
Answer:0.125 moles of CaCl2
Option D 0.13moles
Explanation:
Molarity= number of moles/ volume of solution
0.25M×.5 = number of moles
0.125 moles
What is the ratio of [h 2po 4 -] to [hpo 4 2-] at ph 6.4 if the pka of h 2po 4 - is 7.4?
Answers
The Henderson-Hasselbalch equation allows us to determine the relative concentrations of an acid and its conjugate base based on the pH of the solution and the pKa of the acid. At pH 6.4, the ratio is 0.1.
The Henderson-Hasselbalch equation is a mathematical relationship that relates the pH of a solution to the ratio of the concentration of an acid and its conjugate base. It is commonly used in chemistry and biochemistry to describe the acid-base equilibrium.
To determine the ratio of \([H-2PO_4-]\) to \([HPO_4^2-]\) at pH 6.4, we can use the Henderson-Hasselbalch equation:
\(pH = pKa + log([A-]/[HA])\)
In this case, \(H_2PO_4-\) is the acid (HA) and \(HPO_4^2-\) is its conjugate base (A-).
Given that the pKa of \(H_2PO_4-\) is 7.4, we can substitute the values into the equation:
\(6.4 = 7.4 + log([HPO_4^2-]/[H_2PO_4-])\)
Simplifying the equation:
\(-1 = log([HPO_4^2-]/[H_2PO_4-])\\[HPO_4^2-]/[H_2PO_4-] = 10^{(-1)} = 0.1\)
Therefore, at pH 6.4, the ratio is 0.1.
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Sedimentary
Weathering
erosion, transport
deposition
Heat and/or
pressure
Igneous
Metamorphic
The
Rock
Cycle
Intrusion or
eruption
Burial and
extreme heat
Magma
Look at the diagram above.
Which sentence BEST describes a process in the rock cycle?
Igneous rocks can become metamorphic and sedimentary rocks.
Metamorphic rocks can form by the weathering process,
Volcanoes can deposit sedimentary rock to form mountains.
O Sedimentary rocks can melt to become metamorphic rocks.
Answers
Answer:
I am confident that it is the last answer but if you can find a more verified answer I would go for that.
Water is a universal solvent because it can be a solid, liquid, or a gas True or false
Answers
Exerclse 9-13 (Algo) Dlrect Materlals and Dlrect Labor Varlances [LO9.4, LO9-5] Huron Compony produces a commercial clesning compound known as Zoom. The clirect materials and direct labor standards for one unit of Zoom are given below: During the most recent month, the following octivity wos recorded: a. Nineteen thousand two hundred and fifity pounds of material were purchased at a cost of $1.70 per pound. b. All of the material purchased wos used to produce 2,500 units of Zoom. c. 400 hours of direct labor time were recorded at a total labor cost of $5,200. Required: 1. Compute the materials price and quantity variances for the month. 2. Compute the labor rate and efficiency varionces for the month. (For all requirements, Indicate the effect of each varlance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (1.e., zero varlance). Input all amounts as positive values. Round your Intermedlate calculations to the nearest whole dollar.)
Answers
The materials price and quantity variances for the month is $1,200. The labor rate and efficiency varionces for the month is $2,080.
1. Calculation of Materials price variance and materials quantity variance
Materials price variance = AQ (AP - SP)
= 19,250 ($1.70 - $1.60)
= $1,925 unfavorable
Materials quantity variance = SP (AQ - SQ)
= $1.60 (19,250 - (2,500 × 8))
= $1,200 favorable
2. Calculation of Labor rate variance and labor efficiency variance
Labor rate variance = AH (AR - SR)
= 400 ($13.00 - $13.00)
= $0 None
Labor efficiency variance = SR (AH - SH)
= $13.00 (400 - (2,500 × 0.16))
= $2,080 unfavorable
Direct Materials Price variance measures the effect of differences between actual and expected material prices, while Direct Materials Quantity variance measures the effect of differences between actual and expected quantities of materials.
Direct Labor Rate variance measures the effect of differences between actual and expected labor rates, while Direct Labor Efficiency variance measures the effect of differences between actual and expected labor productivity.
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An unknown gas effuses twice as fast fast as methane, (CH₄). What is the molar mass of the unknown gas?(C=12, H=1)
Answers
The molar mass of the unknown gas is approximately 11.33 g/mol.
Effusion refers to the process of a gas molecule escaping through a small hole into a vaccum. The rate at which a gas effuses is determined by its molar mass. The molar mass of an unknown gas that effuses twice as fast as methane (CH4) can be calculated using the following formula.Molar mass of unknown gas = (Molar mass of methane) ÷ (√2)Molar mass of methane can be calculated by adding the atomic masses of one carbon and four hydrogen atoms.Molar mass of methane = (1 × 12.01) + (4 × 1.01) = 16.05 g/molUsing the above formula,Molar mass of unknown gas = (16.05) ÷ (√2) ≈ 11.33 g/mol.
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A science teacher asked students to calculate the density of a toy block. The mass of the block was 110 grams and the volume of the block was 8 cubic centimeters. What was the density of the toy block in cubic centimeters?
Answers
Answer:
13.75
Explanation:
Density is equal to mass divided by volume. 110/8 = 13.75
A cancer patient needs to increase his ascorbic acid (C6 H8 O6) intake to fight cancer cells.
A) How many moles of ascorbic acid does he need to complete the doctor's prescription of 13.00g of intravenous ascorbic acid everyday for one mol.
B) How many molecules of ascorbic acid does he need everyday to fight the cancer?
C) Aspartame (C14 H18 N2 O5) is a synthetic table sugar substitute used in food & drinks. If a food product needs 0.25g of C14 H18 N2 O5, to sweeten the 2 vennie cupcake, and you ate this product, how many molecules of aspartame have you eaten?
Answers
0.073 moles of ascorbic acid are needed to complete the prescription.0.4445×10²³ molecules are required .0.0014 molecules of aspartame are eaten.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons.
For 1st part, as 1 mole=176.14 g , thus, 13 g=13×1/176.14=0.073 moles, for 2 nd part, as 1 mole=6.023×10²³ molecules, 0.073 moles=0.073×6.023×10²³=0.4445×10²³ molecules, for 3 rd part, 1 molecule=176.14 g , thus 0.25 g = 0.25/176.14=0.0014 molecules.
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How is the molar mass of an element different from the atomic mass of an element?
Answers
2.Molar mass is measured in grams per mole while atomic mass is “unitless.”
3.Atomic mass is measured via mass spectrometry while molar mass is computed via atomic weight.
Problem 1 Water flows through 76 mm ID horizontal pipeline which is 4 km long with the following conditions: Flow rate =27 m 3
/hr Outlet pressure =4 bar (1bar=10 5
Pa) Water density =1000 kg/m 3
Water viscosity =0.001 kg/m−s Pipeline roughness =0.015 mm Calculate the inlet pressure of the pipeline in (bar).
Answers
The inlet pressure of the pipeline in (bar) is 6.7 bar. To calculate the inlet pressure of the pipeline, we can use the Darcy-Weisbach equation.
Darcy-Weisbach equation relates pressure drop, flow rate, pipe characteristics, and fluid properties. The equation is given as:
ΔP = (fLρV²) / (2D) where:
ΔP is the pressure drop
f is the Darcy friction factor
L is the length of the pipeline
ρ is the density of water
V is the velocity of water
D is the diameter of the pipeline
First, we need to convert the flow rate from m³/hr to m³/s:
Flow rate = 27 m³/hr = (27/3600) m³/s = 0.0075 m³/s
Next, we need to calculate the velocity of water:
Area of the pipeline =\(\pi \times \frac {(76/1000)^2}{4} = 0.004556 m^2\)
Velocity
= Flow rate / Area of the pipeline
= 0.0075 m³/s / 0.004556 m² = 1.646 m/s
Now, we can calculate the pressure drop using the Darcy-Weisbach equation. Since we need to calculate the inlet pressure, we assume ΔP is the difference between the outlet pressure and the inlet pressure:
ΔP = (fLρV²) / (2D)
\(\triangle P = \frac {(0.015 \times 4000 \times 1000 \times 1.646^2)}{(2 \times 0.076)} = 10.69 \times 10^5 Pa\)
= 10.7 bar (approx)
Rearranging the equation to solve for the inlet pressure:
Inlet pressure = ΔP - outlet pressure = 10.7 bar - 4 bar = 6.7 bar
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oxides of group 1a and 2a metals are basic (exception: beo is amphoteric). (True or False)
Answers
The statement "oxides of group 1a and 2a metals are basic (exception: beo is amphoteric)." is True.
Oxides of group 1a and 2a metals are generally basic, meaning they react with water to form solutions with a pH greater than 7. This is because these metal oxides have a tendency to donate electrons to water molecules, forming hydroxide ions (OH-) and cations of the metal. The resulting solution is basic due to the presence of hydroxide ions.
Beryllium oxide (BeO) is an exception because it is amphoteric, meaning it can react with both acids and bases. It can react with acids to form salts and with bases to form beryllate salts.
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2. Which of the following does not have a nucleus? a. prokaryotes b. eukaryotes c. prokaryotes and eukaryotes
Answers
Answer:
Erythrocytes
Erythrocytes do not contain a nucleus. This would make answer choice "A" correct. Erythrocytes are red blood cells and these cells differ from the other cells of the body because of the absence of the nucleus. All the other cells noted have nuclei.
Explanation:
Have A Wonderful Day !!
Answer:a. Prokaryotes
Explanation:
what are defect of mendeleevs perodic table
Answers
Answer:
i.elements not obeying increasing atomic mass. ii.properties and uneven grouping.
Which of the following are functions of an animal's movement structures like wings, legs, or fins? Select the two correct answers.
protection from elements
keeping out bacteria and viruses
migrating to mating spots
identifying food
escaping from predators
Answers
Answer:
Protection from elements and Identifying food
Explanation:
For example by use of legs animals can move from one place to another to find food.
Wings usually act as Protection objects in birds
PLZ HELP PPPLLLLLZZZZ HELP ITS OVER DUE PPPPPPPPPPPLLLLLLLLLLLLLLLLLLLLZZZZZZZZZZZ
Answers
Answer:
you didnt put a question lol
Explanation:
Answer:
help with what?
EXPLANATION:
Which of the following is a chemical property of matter? *
Answers
The impulse experienced by a body is equivalent to its change in: a. velocity b. kinetic energy c. momentum. d. None of the above choices are valid. In an isolated system of particles the momentum of the system is conserved regardless of th number of collisions that occur with in the system. a. true b. false uouo sea s a. true b. false . In an elastic collision the kinetic energy of the eellision before and after the collision will no change
Answers
The impulse experienced by a body is equivalent to its change in momentum. Therefore, the valid answer for the given question is option C.
The impulse experienced by an object can be defined as the change in momentum of the object that occurs when an unbalanced force acts on it.In an isolated system of particles, the momentum of the system is conserved regardless of the number of collisions that occur within the system. Hence, the valid answer for this question is option A, true.In an elastic collision, the kinetic energy of the collision before and after the collision will not change.
Therefore, the valid answer for this question is option A, true. In an elastic collision, both the momentum and kinetic energy of the colliding particles are conserved. The total kinetic energy of the colliding particles before the collision will be equal to the total kinetic energy of the colliding particles after the collision.
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Hi! I’m so confused… what is the spin quantum number?? :0
Answers
Answer:
5 on k-12 that's the answer
Explanation:
Explanation:
nah so easy
it's a direction of electron spinning in the shell
+½ means electron spinning in clockwise direction
-½ means electron spinning in anticlockwise direction
which of the following would typically have the highest concentration of alcohol?
Answers
The drink that would typically have the highest concentration of alcohol is hard liquor. Hard liquors are made through the process of distillation, which increases the alcohol content to a higher level.
Hard liquor is defined as liquor with an alcohol content of 30% or more, or 60 proof or higher. This means that they have a higher concentration of alcohol than beer, wine, or other drinks.Liquors are classified into different categories based on their alcohol content, which determines the intensity of their flavors and aromas. Some of the most popular types of hard liquor include whiskey, vodka, rum, gin, tequila, brandy, and cognac.
These liquors are usually consumed in small quantities, and they are often mixed with other ingredients to create cocktails. Their high alcohol content makes them perfect for people who want to drink alcohol without consuming large amounts of liquid.The alcohol content of hard liquor varies depending on the type of liquor and the brand. However, the average alcohol content for most hard liquors is between 35% and 45%. Some of the strongest hard liquors can have an alcohol content of up to 90%. Therefore, it is important to consume hard liquor in moderation to avoid harmful effects on the body.
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Consider your results for the 0.1-m znso4 solution. is the solution acidic or basic?
Answers
0.1-m ZnSO₄ solution is a acidic solution.
Why ZnSO₄ solution is acidic in nature?
The inorganic substance with the formula ZnSO₄ is zinc sulfate, also referred to as "white vitriol" in the past. A prescription medication called zinc sulfate is used to treat a zinc deficiency. Zinc sulfate helps the body's healthy tissues grow and develop more quickly.
Inhaling zinc sulfate can damage the respiratory system, cause nausea, vomiting, stomach pain, disorientation, depression, and even cause death. Blisters, ulcers, and scars are possible outcomes of skin damage brought on by exposure through skin contact. Topical 5% zinc sulfate showed promise for mild to moderate acne patients. Oral zinc gluconate and sulfate were beneficial in cases of moderate to severe acne.
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