answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
djyliett [7]
2 years ago
5

A system is a group of related parts with specific roles that work together to achieve an observed result. Seeds, soil, a plow,

and a large field are parts of what type of system?
A.
an agricultural system
B.
an organ system
C.
a legal system
D.
an urban system
Chemistry
2 answers:
ser-zykov [4K]2 years ago
6 0

Answer - A. an agricultural system

Explanation - Anything that has two or more parts working together is a type of system. Some systems, such as toothbrushes, are very simple because they only have a few parts. Other systems, such as farms, can be very complex because they have hundreds of different parts.  The components of a system play different roles in the system.

Plus study island:D

VMariaS [17]2 years ago
3 0

The answer is A, i'm also on study island on this test. It has a star next to it. So yep we're right!

You might be interested in
Lithium ions in Lithium selenide (Li2Se) have an atomic radius of 73 pm whereas the selenium ion is 184 pm. This compound is mos
NARA [144]

Explanation:

Formula according to the radius ratio rule is as follows.

             \frac{r_{+}}{r_{-}} = \frac{73}{184}

                          = 0.397

According to the radius ratio rule, as the calculated value is 0.397 and it lies in between 0.225 to 0.414. Therefore, it means that the type of void is tetrahedral.

Thus, we can conclude that the given compound is most likely to adopt closest-packed array with lithium ions occupying tetrahedral holes.

3 0
2 years ago
How many oxygen atoms are present in a 14.0 g sample of Cu(NO3)2
Vikentia [17]
<span>3 x 2 =6 oxygen atoms and multiply 6 by 14.0 and you have an answer. </span>
4 0
2 years ago
2 horizontal and parallel lines are intersected by 2 diagonal lines to form a triangle with exterior angles. The top angle of th
Sophie [7]

Answer:

x = 63

z = 117

x + z = 180

Explanation:

edg 2020

5 0
2 years ago
Calculate the mass of 3.75 x 10^23 molecules of CaSO4 Please HelpIn a hurry Ill give brainliest
SOVA2 [1]

Answer:

Mass = 84.82 g

Explanation:

Given data:

Number of molecules of CaSO₄ = 3.75× 10²³

Mass in gram = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

3.75× 10²³ molecule × 1 mol / 6.022 × 10²³ molecules

0.623 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 0.623 mol × 136.14 g/mol

Mass = 84.82 g

7 0
1 year ago
Alka‑Seltzer is marketed as a remedy for stomach problems, such as heartburn or indigestion, and pain relief. It contains aspiri
Papessa [141]

Answer:

The equation for the reaction of one sodium bicarbonate ( NaHCO3 ) molecule with one citric acid (C6H8O7) molecule is the following:

Sodium Bicarbonate + Citric Acid ⇒ Water + Carbon Dioxide + Sodium Citrate

NaHCO3 + C6H8O7 ⇒ 3 CO2 + 3 H2O + Na3C6H5O7

Explanation:

The reaction is in balance, that is, the whole H2CO3 is not finished, but a little bit of this acid is left in the solution. Therefore, when sodium bicarbonate is added to the solution with citric acid, sodium citrate salt (C6H5O7Na3) and carbonic acid (H2CO3) are formed, which is rapidly broken down into water (H2O) and carbonic oxide (CO2).

C6H8O7 + NaHCO3 ⇒ C6H5O7Na3 + 3 H2CO3

C6H5O7Na3 + 3 H2CO3 ⇔ C6H5O7Na3 + 3 H2O + 3 CO2

5 0
1 year ago
Other questions:
  • Which temperature is equal to 120. K?<br> (1) -153°C (3) +293°C<br> (2) -120.°C (4) +393°C
    9·1 answer
  • Bronze contains 90 to 95 percent copper and 5 to 10 percent tin. Because these percentages can vary, bronze is classified as
    5·2 answers
  • What is the bond energy per mole for breaking all the bonds of oxygen, O 2 ?
    6·1 answer
  • Explain why the total amount of energy does not decrease in an exergonic <br> chemical reaction
    6·1 answer
  • Some baker of sourdough and a few other types of bread have what they call “starter dough”. This dough contains yeast from which
    7·1 answer
  • A certain reaction has a 73.6% yield. if 53.8 grams of the product were predicted by stoichiometry to be made, what would the ac
    7·1 answer
  • Question 6 if a gas pressure gauge reads 32.0 psi, what is the pressure in inches of mercury? 165 in. hg 15.7 in. hg 65.1 in. hg
    12·1 answer
  • The lab procedure involves several factors, listed below. Some were variable and some were constant. Label each factor below V f
    8·2 answers
  • A bird on a long migration flies 63 kilometers per hour for 2900 kilometers. How long does he fly?
    11·1 answer
  • Calculate the pH of a buffer solution prepared by dissolving 0.20 mole of cyanic acid (HCNO) and 0.80 mole of sodium cyanate (Na
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!