How many neutrons are in the nucleus of an atom with an atomic number of 25? (use Periodic Table for mass)

Q: absorbance 0.8 0.7 y 1.4x- 0.01. 0.6 0.5 0.4 0.3 0.2 0.1 0.1 0.2 0.3 0.4 0.5 0.6 Concentration…

A: In the absorbance vs concentration graph : x-axis represents the concentration of sample. y-axis…

Q: What are the applications of polymers in real life?

A:

Q: Explain the main properties of polymers that make them desirable  for many applications

A: Polymers are macromolecules formed by the covalent bonding of monomer units. Polymers are very…

Q: What is the following and what are the organic molecules?      H H   C  CI       H

A: The question is based on the concept of chemical bonding. we have to identify the molecule provided.

Q: An electric current of 132.0 mA transports 80.0 C of charge. Calculate the time this took. Be sure…

A: The charge transport in a unit time is known as electric current. The current is calculated by using…

Q: 1) Complete the following conversions. a. b. o Br OH ZI CH₂N(CH3)2

A: These types of questions can be solved if we have a good knowledge of reagents and their working.

Q: Draw the molecule on the canvas by choosing buttons from the Tools

A: In the skeletal formula, each covalent bond between carbon-carbon or carbon-heteroatom is…

Q: 8. If matter is uniform throughout and cannot be separated into other substances by physical…

A: Matter is divided into two categories. 1. Homogenous  - The matter is uniform throughout  2.…

Q: one: ethyl peroxide. . dimethyl ether. diethyl ether. methyl ethyl ether.

A: The above formula has ether functional group  So, name is diethyl ether  (C) is correct option.

Q: What is the energy in Joules of one mole of photons of visible light having a wavelength of 6.31 x…

A: The energy of electromagnetic radiation is quantized. The smallest unit of energy of the radiation…

Q: It is the ability of a material to resist scratching, wear and tear, and indentation. O Hardness O…

A: Please find your solution below : It is important to understand the properties of material while…

Q: 5. HITACHẾ H£=AF 0 H₂ 2dtm 25%℃ #2 boa /30°c

A: We know H2 generally reduces double bond but with increase in reactivity i.e at high temperature and…

Q: A distillation model containing a certain percentage of water was taken from the model 25 ml and the…

A: Given data, Amount of total sample = 25mL Amount of water discarded = 2mL

Q: a) Explain what catalytic cracking and catalytic reforming are and how they work in oil refineries.…

A: Question 1: Answer: Catalytic cracking:          Catalytic cracking is now one of the most important…

Q: S 702 t N02 C2H4 20 vl mil A, 02 Free 40 NO2 CH2N2 NO2

A: alkenes act as both electrophiles and nucleophiles. In case of cyclo-addition reaction, periferial…

Q: Can you help with # 70.  This is not a graded question as it is a practice question . I am 60 years…

A:

Q: CH₂1₂ Zn(Cu) diethyl ether

A: When an alkene reacts with CH2I2 in the presence of Zinc a cyclopropane derivative is formed. This…

Q: Has ethanol changed since discovery

A: A question based on molecules that is to be accomplished.

Q: An electric current of 304.0 mA transports 1.00 kC of charge. Calculate the time this took. Be sure…

A:

Q: Describe the role played by the electron gun and the electric field in the mass spectrometer.  State…

A: Mass spectrometry It is the instrumental method for the analysis of a compound's molecular weight.…

Q: Which practice is NOT used to gauge accuracy? raw data and results from calibration checks B.…

A: Correct option is (e) sample rejection .

Q: Life-cycle assessment (LCA) is defined as the study of resource consumption, emissions, and their…

A: Now LCA is basically concerned with the effects on the environment and the energies released or…

Q: Luminosity is measure by Kelvin O True O False

A: In a unit time,the elecromagnetic radiation emitted by the star galaxy etc ,is called luminosity and…

Q: Climate Change: Lesson Which of these is an example of a human activity that causes climate change?…

A: Explained as follows

Q: What is the following and what are the organic molecules?         H         H H     C    C    C…

A: Given that,

Q: Which point is not related to transition metal= O They exhibit high melting and boiling points O…

A: Correct Option : They do not show variable valency

Q: CI Mg

A: Haloalkanes (R-Cl) react with Magnesium metal to form polar Grignard reagents (R-MgCl) which then…

Q: Differentiate thermoplastic and thermosetting polymers and explain the reason behind the difference…

A: Polymer is formed by addition of monomer units. There are two types of polymerization:  Addition…

Q: k=1.38x10^-23J/K, Avogadros number = 6.023×10*26, kT = 0.0259 eV (at T=300K) Determine the…

A: Given  Energy of state = E = Ef  + 0.04Temperature = 300 KProbabbility of state = To be determined…

Q: Distinguish between High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE) and Linear Low…

A: High density polyethylene:-  a) high density b) stronger intermolecular forces , stronger than low…

Q: Can you help us with # 55 D, E and F. We get A,b, C.  See two pictures. This is not a graded…

A: step: 1 of 7 664-15-51P SA: 5276 SR: 1490

Q: Br Br2 НО .. DCM

A:

Q: 1.03, CH2C12 2.Zn, НOАс b. 1. HgOAC)2, H,0 2.N ABH4 CH=CH2 Ch H2O

A: The reactions that involving organic compounds are known as organic reactions.  Alkenes are the…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.