CHEMISTRY HIGH SCHOOL

How many neutrons are in the isotope carbon-14?A. 6

B. 8

C. 12

D. 14

Answers

Answer 1
Answer: the correct answer is  a 6
Answer 2
Answer:

The correct answer is 8

Related Questions

At 25C and 795 torr, carbon dioxide has a solubility of 0.0356 M in water. What is the solubility at 25 C and 2070 torr? ____ MI know that at a given temperature, the solubility of a gas in a liquid is directly proportional to its pressure but how would that be set up in an equation..?
In nature, rings with ____ carbon atoms are the most abundant
Which explanation best compares the movement of particles in three states of matter?
Phytoplankton are microscopic photosynthesizing organisms that typically live in the upper layers of the ocean. What trophic level do phytoplankton belong to?Primary producers Decomposers Primary consumers Secondary producers
For the chemical reaction C2H6 + 137 kJ C2H4 + H2, the chemical energy of thea. reactant is greater than the chemical energy of the products. b. products is greater than the chemical energy of the reactant. c. reactant and the chemical energy of the products are equal. d. reaction is conserved.

Which statement is true about the use of radiation to treat cancer?Only weak X-rays can be used.
Only powerful X-rays can be used.
Only beta particles can be used.
Only alpha particles can be used.

Answers

The statement that is true about the use of radiation to treat cancer is that only powerful X-rays can be used. The radiation used for cancer treatment is known as ionizing radiation. These forms ions in the cells which could kill or stop them from growing. This type of radiation is have more energy than radio waves, microwaves and visible light.

Answer:

Only powerful x-rays can be used

Explanatijust did it and read it

Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?calcium, chromium, potassium
chromium, calcium, potassium
potassium, calcium, chromium
potassium, chromium, calcium

Answers

Answer: The correct order is:

Potassium > calcium > chromium

Explanation:

Potassium belongs to the group of alkali metals with group number 1 in a periodic table. Potassium easily displaces hydrogen atom from the water molecule.

Where as calcium belongs to group (II) and easily displaces hydrogen atom from the water molecule.

In a reactivity series potassium is comes before the calcium metal which means that it is more reactive than calcium metal.

Potassium > calcium

Where as chromium metal is member of group 6 and chromium reacts with steam and acids to form hydroxides. But doesn't reacts with water(in liquid phase) which means it less reactive then potassium and calcium.

Potassium > calcium > chromium

potassium, calcium, chromium

. As the elements in Period 3 are considered in order of increasing atomic number, there is a general decrease inatomic mass
atomic radius
electronegativity
first ionization energy

Answers

Atomic radius, because the number of electrons and protons increases by 1 each time you move right along period so there is greater electrostatic attraction (electrons are pulled to the nucleus more strongly) and there is no additional shielding to counteract this since the number of inner energy levels does not increase along a period.

A solution that is at equilibrium must be(1) concentrated (3) saturated(2) dilute (4) unsaturated

Answers

Answer:

(3) saturated

Explanation:

Hello,

In this case, a solution that is at equilibrium must be (3) saturated as at the equilibrium, the entire solute is completely dissolved into the solvent, so no leftovers are present. Unsaturated solutions are not at equilibrium since there is a portion of solvent that is not contributing to equilibrium. Concentrated solutions are not at equilibrium since they could have more solution than allowed into the solvent.

Best regards.
A solution that is at equilibrium must be saturated.

How do you convert L to mL

Answers

Answer:1 Liter (L) is equal to 1000 milliliters (mL). To convert liters to mL, multiply the liter value by 1000. For example, to convert 2 liters to mL, multiply 2 by 1000, that makes 2000 mL is 2 L.

Explanation:

Describe how you would use the information depicted in the potential energy diagram below to determine the enthalphy change of the reaction and if the reaction is endothermic or exothermic?

Answers

When the formation of a substance is negative, it means that it releases heat to the surroundings. When it releases heat to the surroundings, the reaction is exothermic. When it absorbs heat from the surroundings, the reaction is endothermic.
Other Questions
Given the reaction: HC2H3O2(aq) + H2O ↔ H3O+(aq) + C2H3O2-(aq) When the reaction reaches a state of equilibrium, the concentrations of the reactants 1. are less than the concentrations of the products 2. are equal to the concentrations of the products 3. begin decreasing 4. become constant
4. How many moles are in 54.0 grams of Silver?54.0 g Ag x (108mol ag /1 g ag ) = 5,832 ag moles Ag(Use the gray boxes to insert the values for the conversion factors.)5. What is the mass of 6.3 moles of Sulfur?6.3 mol S x ( / ) = g S6. How many atoms are in 6.0 moles of Argon?6.0 mol Ar x ( / ) = atoms of Ar7. How many moles of Kr are in 112 g of Krypton?112 g Kr x ( / ) = moles of Kr8. How many moles are in 1.93 x1024 formula units of KF, potassium fluoride?1.93 x1024 formula units x ( / ) = mol KF(The next two problems need 2 step conversions - so there are two conversion factors (fractions) for the problem - remember the mole map - covert to moles first, then to the desired unit.)9. How many atoms are in 86.2 g of Si (silicon)?86.2 g Si x ( / ) x ( / ) = atoms of silicon10. What is the mass in grams of 4.8 x 1024 atoms of Magnesium?4.8 x 1024 atoms of Mg x ( / ) x ( / ) = g Mg
Why do chloride ions move to the positive electrode?
What is the symbol for an atom containing 20 protons and 22 neutrons?