How many neutrons are probably in the nucleus of an element of atomic weight 197?

a. 43

b. 79

c. 83

d. 100

e. 118

Of these four liquids, which has the lowest viscosity? options: A. Pancake syrup at room temperature B. Motor oil that is in the refrigerator C. Liquid mercury at room temperature D. A glass of lemonade at room temperature

What is the ionic bonding of NaCl

The boundary between the Pacific Plate and the Australian Plate is a transform boundary. What event is likely to occur at this boundary? A) Mountain formation B) Earthquakes C) Hurricanes D) Volcanic eruptions

The value of Ka in water at 25 °C for propionic acid (C2H5CO2H) is 3.4 x 10-5 M. What is the pH of a 0.020 M aqueous solution of propionic acid?

Write the complete symbol, including mass number and atomic number, for each atom. contains 28 protons and 30 neutrons : a. ^{58}_{28}Ni5828Ni contains 22 protons and 21 neutrons : b. ^{43}_{22}Ti4322Ti contains 15 electrons and 19 neutrons c.

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these

What is the mass of a box of nails

In a phase change of water between the liquid and the gas phases, 770.1 kJ of energy was released by the system. What was the product, and how much of it was formed in the phase change? (dа ta: H₂O (l) → H₂O (g) ΔH = 44.01 kJ/mol.) A.

Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium. Chemical equation for producing ammonia: N2 + 3H2 ⇌ 2NH3 + energy

How many Joules are equivalent to 75 Calories?