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Chapter 1 Solutions
Principles of Modern Chemistry
- 1. What is the length of the cubic box? 2. What is the radius of the atoms?arrow_forwardThe vitamin niacin (nicotinic acid, C6H5NO2) can be isolated from a variety of naturalsources such as liver, yeast, milk, and whole grain. It also can be synthesized fromcommercially available materials. From a nutritional point of view, which source ofnicotinic acid is best for use in a multivitamin tablet? Why?arrow_forwardA flask of ammonia is connected to a flask of an unknown acid HX by a 1.18 m glass tube (where "X" represents a halogen). As the two gases diffuse down the tube, a white ring of NH4X forms 80.8 cm from the ammonia flask. Identify element X (Name or symbol).arrow_forward
- you are designing a rocket engine th uses a mixture of hydrazine and water as a propellant. this engine will be mounted to an unmanned drone bound for hydrazine for the return launch. how much will this hydrazine weigh on the surface on venus express this quanitity in Newtons. the molecular formula of hydrazine is N2H4, you may assume the molecular weights of nitrogen and hydrogen are 14 and 1 g/mol, respectivly. Gravitational acceleration on Venus is 8.87m/s^2.arrow_forwardThe value for T is 32, for P is 0.6, for V is 1.48arrow_forwardSuppose you synthesized copper nanoparticles and found the average particle diameter to be 6.2 nm. How many copper atoms would you expect to find in the particle? One approach: assume the particle is spherical. In all cases, assume the particle has 24 Cu atoms across the diameter (the radius of each Cu atom is 128 pm) What fraction of the atoms would be surface atoms.arrow_forward
- Epsom salt is used in tanning leather and in medicine. It is hydrated magnesium sulfate, MgSO4 7 H2O. The water of hydration is lost on heating, with the number lost depending on the temperature. Suppose you heat a 1.394-g sample at 100 C and obtain 0.885 g of a partially hydrated sample, MgSO4 x H2O. What is the value of x?arrow_forwardThe vitamin niacin (nicotinic acid,C6H5NO2 ) can he isolated from a variety of natural sources, such as liver, yeast, milk, and whole grain. It also can be synthesized from commercially available materials. Which Source of nicotinic acid, from a nutritional view, is best for use in a multivitamin tablet? Why?arrow_forwardMarie Curie was born in Poland but studied and carried out her research in Paris. In 1903, she shared the Nobel Prize in Physics with H. Becquerel and her husband Pierre for their discovery of radioactivity. (In 1911 she received the Nobel Prize in Chemistry for the discovery of two new chemical elements, radium and polonium, the latter named for her homeland, Poland.) They and others observed that a radioactive substance could emit three types of radiation: alpha (), beta (), and gamma (). If the radiation from a radioactive source is passed between electrically charged plates, some particles are attached to the positive plate, some to the negative plate, and others feel no attraction. Which particles are positively charged, which are negatively charged, and which have no charge? Of the two charged particles, which has the most mass? Radioactivity. Alpha (), beta I(), and gamma () rays from a radioactive element are separated by passing them between electrically charged plates.arrow_forward
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