Find the force of an object that has an acceleration of 6.7 m/s2 and a mass of 12 kg.

240 g of water (specific heat = 4.186 J/g°C, initial temperature = 20°C) is mixed with an

ivolga24 [154]

The answer for this would be 69.6

3 0

3 years ago

What type of energy does a cup sitting on a table have? Why?

Sedbober [7]

Answer:

POTENTIAL ENERGY

A cup sitting on a table possesses potential energy

Explanation:

Answer Expert Verified

5 0

3 years ago

Submit Quiz Previous Page 1 of 4 Next Drag and drop each description to match the subatomic particle. Protons Neutrons Drag and

Pavel [41]

Answer:

Protons:

Positively charged particle

The number of these is the atomic number

All atoms of a given element have the same number of these

Neutrons:

Neutral particles

Isotopes of a given element differ in the number of these

The mass number is the number of these added to the number of protons

Explanation:

Protons (positively charged), neutrons (neutral) and electrons (negatively charged) are smaller than an atom and they are the main subatomic particles. The nucleus of an atom is composed of protons and neutrons, and the electrons are in the periphery at unknown pathways.

The Atomic number (Z) indicates the number of protons ( $P^{+}$ ) in the nucleus. Every atom of an element have the same atomic number, thus the same number of protons.

The mass number (A) is the sum of the number of protons ( $P^{+}$ ) and neutrons (N) that are present in the nucleus: A= Z + N

Isotopes are atoms of the same element which nucleus have the same atomic number (Z), and different mass number (A), it means the same number of protons ( $P^{+}$ ) and a different number of neutrons (N). For example, the oxygen in its natural state is a mixture of isotopes:

99.8% atoms with A= 16, Z=8, and N=8

0.037% atoms with A=17, Z=8, and N=9

0.204% atoms with A=18, Z=8, and N=10

3 0

4 years ago

In the laboratory, a general chemistry student measured the pH of a 0.529 M aqueous solution of phenol (a weak acid), C6H5OH to

Artyom0805 [142]

Answer:

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .