3. How many grams of NaOH are needed to make 40 mL of a 2.0 M solution?

Q: Write one word problem and solution. A exemplar are included - be aware that the assignment has been…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: temperature of 20.°C is equivalent to ________ K.

A: Given :- Temperature = 20.°C   To calculate = Temperature in kelvin

Q: Solve for a, where M is molar and s is seconds. H= = (9.0 x 103 M-28-¹)(0.28 M)³ Enter the answer.…

A:

Q: 2. An FM station broadcasts music at 93.5 MHz (Megahertz or 10° Hz). Find the wavelength in m an nm…

A: To find wavelength.

Q: Calculate the Cal (kcal) in one cup of whole milk that contains 19 g of carbohydrate, 9g of fat, and…

A:

Q: The graph shows the results of an experiment where a temperature probe was placed in a beaker of…

A: y = -1.02x + 41.3   y = temperature  x = time   Value of temperature at time = 6 min

Q: Before heating 4 qt. saucepan 8 qt. stockpot 24.5 °C Temp. 24.5 °C Temp. After heating for 5 minutes…

A: Water has specific heat constant of 4.184 J per g per oC which means that 4.184 J of energy is…

Q: For each trial (data in Tables 3 – 5) graph the volume of water displaced (in mL) on the x-axis…

A: The graph given shows the amount of water that is displaced with respect to time. The slope of any…

Q: 4. An x-ray has a wavelength of 1.3 x 10-1º. Calculate the energy (in J) of one photon of this…

A:

Q: 30560 m2 to hectares

A: 1 hectare is equal to 10000 m2

Q: A student takes the following steps during an experiment: Measure 15mL concentrated HCl (student…

A: Possible source of error that may have contributed to the student's disappointing yield: 1. May be…

Q: A chem rking as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of…

A: Density of a substance is related to mass and volume of the substance as shown by the equation given…

Q: The medication order reads 600.0 mL of D5W (also known as 5% dextrose in water) containing 24,000…

A: Heparin is a blood thinner and tends to prevent clot formation of the blood. Infusion rate refers to…

Q: A pharmacist adds distilled water to 4.00 g of a powdered drug. The final volume of the solution is…

A:

Q: Calculate the reduced mass of NaCl. The relative mass (amu) of Na and Cl are 22.98977 and 34.96885,…

A:

Q: Use the simulator to add 20 grams of solid ammonium nitrate (default temperature is 20 °C ) to  100…

A:

Q: 3. A radio wave has a frequency of 3.8 x 1010 Hz. What is the energy (in J) of one photon of this…

A: Answer

Q: 11. What is the frequency of a wave carrying 8.35 x 10-18 J of energy?

A: Given that,    Energy of wave E = 8.35×10-18 J  Plank constant h = 6.626×10-34 J.s

Q: Calculate the amount of heat needed to boil 39.6 g of hexane (C,H4), beginning from a temperature of…

A: Given - - > m = 39.6 g T1 = 47.6 °C T2 = 68.72°C ( final temperature because the hexane has to…

Q: Calculate the amount of heat needed to melt 162. g of solid ethanol (CH3CH₂OH) and bring it to a…

A: Given,mass of ethanol = 162. gFinal temperature = -41.1 0CFrom the reference,melting point of…

Q: I Water Only O Water with Fertilizer 20 18 16 14 12 10- 8 는 6. 4 2 Week Questions: 1. How tall were…

A: For this problem we are given a graph and by analysing it we have to fill the  answers in the…

Q: when burning 300 kg of wood 88 kg of oxygen were consumed. A lot of smoke was released and 10 kg of…

A: The given reaction is a chemical reaction as it involves the combustion of wood in the presence of…

Q: 2. The Berg Temperature Scale has these peculiar temperatures as it's reference points: 70°B (the…

A: Given : 0 oC temperature on Berg scale = 70 oB And 135 oC temperature on Berg scale = 98 oB

Q: A student walks over to the balance area with an Erlenmeyer flask in their hand. Before reaching the…

A: Erlenmeyer flask is a conical flask used for performing titrations in the laboratory.

Q: How many grams of \(\rm H_2\) are needed to produce 14.41 \({\rm g}\) of \(\rm NH_3\)?

A: The reaction to produce ammonia from hydrogen is given by  N2 + 3 H2 ------> 2 NH3

Q: Balance the following equation by supplying the values for the coefficients. CH,O 0₂ CO₂ + Moving to…

A:

Q: How many grams of iron metal can be formed by the reaction of 2.14 gAI metal with excess Fe,O3,…

A:

Q: How many Calories (nutritional Calories) does 16.4670 pounds of fat have? Show dimensional analysis,…

A: 1 pound of fat =  3500 calories

Q: A student dissolves 14.2 g of ammonium chloride (NH4Cl) in 200. g of water in a well-insulated open…

A:

Q: A tank with 43.2 kg of water is leaking at a rate of 0.0135 kg/s How many hours will it take until…

A:

Q: Calculate the fluid intake in milliliters (mL) for the following food items. (Assume a soup bowl…

A: Choice (a) is correct

Q: Convert 38\ deg Convert K.

A: The objective of this question is to convert a temperature given in degrees Celsius to Kelvin. The…

Q: You are given the masses, in grams (g), and the volumes, in cubic centimeters (cm°), for a series of…

A: Density is obtained as mass per unit volume. Given that, Mass of NaCl = 43 g, volume = 20cm3 Mass of…

Q: 1. For the following questions, respond using one of the four options: A. Higher B. Lower C. Same D.…

A: Basic of Heat Flow and Enthalpy of Reaction

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.