Which statement about ozone and the ozone layer is true? A. Ozone is found in a band of almost pure ozone several kilometers thick encircling the Earth. B. The ozone in the ozone layer absorbs UV light between 200 and 300 nm. C. Ozone is a compound with the chemical formula CO2. D. In the Earth's atmosphere, ozone exists only in the ozone layer. E. Ozone is used as a coolant in refrigerators and air conditioners.

Q: What is the 'electron geometry' of tetrachloromethane (CCl4)? Select one:

A: Electron geometry is a 3-dimensional representation of bond pairs and lone pair around the central…

Q: U.V. radiation from the sun causes a reaction in the atmosphere that leads to production of O A…

A: UV rays react with atmosphere oxygen to form the final product.

Q: For each of the following pairs of substances, select the one that is expected to produce a solution…

A: Generally strong electrolyte will break into its respective ions which move freely when dissolved in…

Q: Molecule (a) is more volatile than (b). This is due to:  a. Intermolecular hydrogen bonding in…

A: Volatility increases with decreasing boiling point via decreasing hydrogen bonding ability . For…

Q: 14 The molecular geometry of the molecule NF3 is a. linear b. trigonal pyramidal c. tetrahedral d.…

A: 14. The molecular geometry of the molecule NF3 is a. linear  b. trigonal pyramidal c. tetrahedral d.…

Q: What is the geometry of SCl4?   Select one: a. Trigonal pyramidal b. Octahedral c. Bent d. See-saw…

A: Geometry of SCl4  = To be determined  Sulfur has 6 valence electron Sulfur makes 4 bond pair and 1…

Q: Types of primary bonds include:   Question 28 options:   Hydrogen bonding   Van der waals bonding…

A: Bonds are separated into primary bonds and secondary bonds  primary bonds are formed when transfer…

Q: Write a balanced equation for the overall reaction that gives sulfuric acidfrom SO2 dissolved in…

A:

Q: What is the geometery of SO2 (including the steps for deciding the geometery)?

A:

Q: 1) Which type of intermolecular interaction would be the strongest in each substance (between…

A: Hydrogen bonds exist in compounds in which electronegative atoms like fluorine,  oxygen and…

Q: What is the 'electron group geometry' for the carbon in phosgene (Cl2C=O)?

A:

Q: Nitrogen and phosphorus are elements of the same group. What is the MOST LIKELY reason why PH3 has a…

A: Boiling point :- The temperature at which valor pressure of a liquid becomes equal to atmospheric…

Q: Describe the trend for second-period hydrides. Why is this trend observed?

A: Observing the given figure shows that period 2 hydrides has unusual trend in their boiling…

Q: Given that the reaction of ozone forming oxygen below has a heat of reaction of – 286 kJ…

A:

Q: The average bond order is the number of bonds between two atoms taking into account resonance. Draw…

A: The number of equivalent lewis structures can be drawn by following octet rule.

Q: 1. Compare and contrast the bonding present in each of the following: 02, CO, and MgO. Identify the…

A:

Q: only 12 and 13

A: We have to write the correct lewis dot structure for O2 as follows in step 2:

Q: One famous application of nanomaterials are in the cosmetic industry, identify the nanometrials used…

A: Nanomaterials are those material which has at least one of its dimension in nano range, that is…

Q: Two molecules of borane can come together to form an unusual bond using two electrons. How many…

A: Boron-hydrogen-boron  bridge bond is a 2 electron bond and is called 3-center , 2-electron bond

Q: What is the 'electron group geometry' for the carbon in phosgene (Cl2C=O)? Select…

A: trigonal planar is the 'electron group geometry' for the carbon in phosgene (Cl2C=O).

Q: 25. Which of the following would be nonpolar? A. HCl B. CO C. H2O D. I2

A: When electronegativty difference between two atoms is zero than it called non polar.

Q: 21. Which of the following does have the lowest polarizability? Z of Br = 35,  I = 53, F = 9,   S =…

A: Z of Br = 35, I = 53, F = 9, S = 16

Q: Which is shorter—an N–H bond or a C–H bond?

A: The distance between the nucleus of two bonding atoms is known as bond length. The value of bond…

Q: Which of the following elements does not have an allotrope that is mainly covalent in nature? a.…

A: Allotropy is the property of chemical elements to exist in two or more different forms. In the given…

Q: a. How many types of metal bond theories are there? Explain all theories in detail.

A: Atoms in metal are very similar to one another, creating what is known as closed packaging, with…

Q: OH `NH, OR? [Et,NH][HSO 1 H. H,N° `NH, 1. H. 5 2 2 2 RO `NH, RO -H,0 NH OH NH, 6. 4

A:

Q: What is the Lewis dot structure of phosphorous?

A: The anwer to the following question is-

Q: This table displays the chemical make-up of human bones. Below, you can see an example of an amino…

A: Selenocysteine is proteinogenic amino acid. Selenoproteins contain selenocysteine residues.…

Q: Some polymers may be strengthened considerably by a mechanism called 'branching'. This mechanism can…

A: This question is related to branching.

Q: A proposed two-step mechanism for the destruction of ozone in the upper atmosphere is a. What is the…

A:

Q: Using appropriate chemical reactions for illustration, show how calcium present as the dissolved…

A: Bicarbonate, chloride salts of calcium causes hardness of water. Out of both, bicarbonate causes…

Q: 20. According to the VSEPR theory, the geometry of the SO, molecule is A. pyramidal. B. distorted…

A: SO3 molecule has one sulfur atom and three oxygen atoms. S contributes 6 electrons. Every O atom…

Q: What allotrope of sulfur is is stable at room temperature? S8 S16 S2 S16

A: We will discuss about the allotropes of Sulfur.

Q: Which of the following molecules or ions have the same molecular geometry? a.  water and sulfur…

A: Given data: a.  water and sulfur dichloride b.  phosphate anion and sulfate anion c.  chlorate anion…

Q: How does peroxide differ from O2

A: The molecular formula of peroxide is O22-. In peroxide overall two negative charge on O2. Each…

Q: what is the density in g/L (STP) of SO2?

A: Density is defined by the ratio of mass to the volume. it is expressed in mathematically is as…

Q: This type of band is the result of an end-to-end overlap, where electron density lies along a line.…

A: Concepts of chemical bonding.

Q: 10.) In pure samples of each of these compounds, which one(s) can form H hydrogen bonds? Which…

A: 10) Given set of molecules are:

Q: 23 2i0t0isınet e9/129hm. unomwot he centri pd Wrat is the amount, in moles of 2.0LOF hydrogen gas at…

A: The moles of 2.0 L of H2 gas at 836 torr and a temperature of 27°C is to be determined.

Q: C. SO3 H₂SO4

A: Benzene and its derivatives react with SO3 , H2SO4 to produce benzenesulfonic acid or its…

Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.