Molarity of ions - Study guides, Class notes & Summaries

Catalyst (enzyme) -correct answer A substance that increases the rate of a chemical reaction without being changed itself, lowers the activation energy needed for a reaction Electrolyte -correct answer A substance that is dissolved in solution and some of its molecules split or dissociate into electrically charged atoms or ions Oxidant -correct answer Causes a GAIN of electrons and is REDUCED in a chemical reaction Reductant -correct answer Causes a LOSS of electrons and is OXIDIZED in ...

Analytical Balance - 5 sig figs or 4 if unstable and a line over the 4th digit Thermometer - Three sig figs (20.5) graduated cylinder (50mL) - 3 Sig Figs (50.2) Graduated Cylinder (10mL) - 4 sig figs (10.25) volumetric flask - 5 sig figs Buret - 4 sig figs (27.22) Pipet - 4 sig figs (.02500L) adding and subtracting sig figs - least number of decimal places added or subtracted - 12.2 + 5.44 = 17.6 multiplying or dividing sig figs - the least number is the number of sig figs you can have ...

Electron configuration for cations - Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions - Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals - s, p, d, f Primary vs secondary structures of proteins - Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) Most bonds in organic compounds are - covalent Properties of...

"Ask the subject to smile broadly. Record any asymmetry or drooping in the face." What cranial nerve is this assessing? - Cranial Nerve VII (Facial) "Pulse deficit" describes a difference between pulse rate assessed by palpating a radial pulse and heart rate assessed by auscultation (listening) or ECG. What could account for pulse deficit? - Pulse deficits can occur when there are circulatory problems, atrial fibrillation, or valvular disturbances. A difference between the palpated hear...

HESI A2 ENTRANCEEXAM FOR CHAMBERLAINCOLLGE OF NURSING 2023 QUESTIONS WITH ANSWERS CHEMISTRY HESI A2 CHEMISTRY V1/V2 FILE 1. If a Hydrogen isin a compound, what would its oxidation number be? +1 2. What isthe oxidation number of any simple ion? +1 or -1 depending on the charge of the ion 3. How many kilograms are in a pound? 0. kg 4. What is the temperature for freezing point of water in Celsius? 0 degrees Celsius (32°F for Fahrenheit) 5. What is the conversion of Celsius to Fah...

Test Bank For Vander’s Human Physiology 14th Edition A Descriptive Test Bank for Vander’s Human Physiology 14th Edition By Eric P. Widmaier Dr., Hershel Raff, Kevin T. Strang Dr. What is this product? Test Bank for Vander’s Human Physiology 14th Edition is not a textbook, instead, this is a test bank or solution manual as indicated on the product title. Test Bank: This is a supplement to the textbook created by experts to help you with your exams. It is a collection of exam questions based...

1 FINAL EXAM CHEM 219 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ The speed of a wave (c) is the product of its frequency (ν) and wavelength (λ). Correct Answer: E = hv = h x c / λ nm to m or m to nm Correct Answer: 1 m / 10^9 nm or 10^9 nm / 1 m What is the maximum number of electrons that can have the quantum numbers n = 3, ℓ = 2, mℓ = -2? Correct Answer: The Pauli exclusion principle states that no two electrons in a given atom can share the sa...

Describe the events at the axon terminal that cause one neuron to release a neurotransmitter onto another. - The action potential travels down the axon and gets to the axon terminal, which causes calcium to enter the axon terinal, which causes the release of the neurotransmitter by exocytosis into the synaptic cleft. The post synaptic neuron, dendrite opens voltage gated channels and allow Na+ in and K+ out. A hypothyroid individual shows no increase in metabolic rate when injected with TSH...

Electron configuration for cations - CORRECT ANSWER Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions - CORRECT ANSWER Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals - CORRECT ANSWER s, p, d, f Primary vs secondary structures of proteins - CORRECT ANSWER Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) M...

1 atmosphere = _____ torr - 760 A photon acts like a wave with a ________ and ________ - frequency// wavelength Acids are always written with the ionizable hydrogens written first, for example _______ - HBr, H2SO4 Acids ionize and release ____ ions - H+ Combined Gas Law - the law that describes the relationship among the pressure, temperature, and volume of an enclosed gas in chemistry terms: P1V1/T1=P2V2/T2 Dalton's Law of Partial Pressures - the total pressure of a mixture of gases e...