All categories

3 years ago

Critical practices to control the amount of solid waste include __________.

Chemistry

2 answers:

Sindrei [870]3 years ago

5 0

Answer:

There are a number of critical practices that can be employed in the modern world to reduce the amount of solid waste. These include recycling materials such as paper, plastic, glass, and metals which can easily be turned into new objects, and reusing objects that do not have to be disposable for health reasons. So it's A

Explanation:

erica [24]3 years ago

3 0

Reduce, reuse, recycle, compost. I think hope its helpful.

You might be interested in

Depicted below you will see the molecules COH2 and SO3 . Why is COH2 polar while SO3 isn’t?

tia_tia [17]

Answer:

See explanation

Explanation:

When we look at SO3 we will notice that the compound is trigonal planar and it is symmetric. This means that it has equal charge distribution hence its dipoles cancel out resulting in a zero net dipole moment.

However, COH2 is also trigonal planar but is non-symmetric. Hence, its dipole moments do not cancel out, hence the molecule has a resultant dipole moment and is a polar molecule

7 0

2 years ago

Which best describe the isovolumetric contraction phase of the cardiac cycle?

cluponka [151]

The name isovolumetric indicates that there is no change in volume that takes place and this only occurs when all of the valves within the heart are shut.

5 0

3 years ago

Read 2 more answers

What atomic component contributes to many of the trends of elements

aivan3 [116]

what??? i need more information

3 0

3 years ago

Which occurs whenever valence electrons are shared or transferred between atoms?

Tanzania [10]

Whenever electrons are shared or transferred between atoms there is a chemical reaction.

The electrons that are being transferred between atoms (two or more) create new bonds, which enable the production of a new substance. This process is then known as a chemical reaction.

4 0

3 years ago

Write the symbol for each of the following ions:

kap26 [50]

Answer:

a) $_{31}^{71}\textrm {P^{3+}}$

b) $_{35}^{80}\textrm {Br^{-}}$

c) $_{90}^{232}\textrm {Th^{4+}}$

d) $_{38}^{87}\textrm {Sr^{2+}}$

Explanation:

For neutral atoms:

Atomic Number (Z)= number of protons = number of electrons

Mass number (A) = number of protons + number of neutrons

For ions with positive net charge:

Number of protons = Z + net charge

For ions with negative net charge:

Number of protons= Z - net charge

a) A = 71, Charge = +3

Number of electrons = 28

Number of protons = 28 +3 =31

$_{31}^{71}\textrm {P^{3+}}$

b) A = 35, Z = 45+35=80, Charge = -1

Number of protons =35

Number of neutrons = 45

Number of electrons = 36

Charge = Number of protons- Number of electrons =35-36 = -1

$_{35}^{80}\textrm {Br^{-}}$

c) Charge = +4

Number of electrons = 86

Number of protons = Z = 86+4 = 90

mass number = A = 90+142 = 232

$_{90}^{232}\textrm {Th^{4+}}$

d) Charge = +2

Atomic number = Number of protons = Z = 38

mass number = A = 87

$_{38}^{87}\textrm {Sr^{2+}}$

3 0

3 years ago