1answer.
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
egoroff_w [7]
3 years ago
14

How do cell parts work together so the cell can survive and do its job? Describe at least two connections between the different

cell parts in plant or animal cells.
Chemistry
1 answer:
olasank [31]3 years ago
4 0
The correct answer to this question is communicating
You might be interested in
Which element was first discovered on the sun? hydrogen carbon oxygen helium
EastWind [94]
The element first discovered in the sun is the element Helium. This noble gas is the second most abundant element<span> in the universe and was </span>discovered<span> on the </span>sun<span> before it was discovered on the earth. Helium is the result of the nuclear fusion of hydrogen creating thus the mass of energy in the sun.</span>
3 0
4 years ago
Read 2 more answers
Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass.​
Zina [86]

Answer:

again same questions

i think its from 1st chapter

4 0
3 years ago
qué papel desempeña el narrador en la historia circula con el negro el párrafo en el que investiga el narrador e indica sin larg
liubo4ka [24]
No mms wey qué pasa vato
6 0
3 years ago
In which of these statements are protons, electrons, and neutrons correctly compared
Marat540 [252]
<span>Quarks are present in protons and neutrons but not in electrons.</span>
8 0
3 years ago
Calculate ΔHrxn for the following reaction: Fe₂O₃(s)+3CO(g)→2Fe(s)+3CO₂(g) Use the following reactions and given ΔH′s. 2Fe(s)+3/
ExtremeBDS [4]

Answer : The enthalpy change of reaction is -23.9 kJ

Explanation :

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

The given final reaction is,

Fe_2O_3(s)+3CO(g)\rightarrow 2Fe(s)+3CO_2(g)    \Delta H=?

The intermediate balanced chemical reaction will be,

(1) 2Fe(s)+\frac{3}{2}O_2(g)\rightarrow Fe_2O_3(s)    \Delta H^o_1=-824.2kJ

(2) CO(g)+\frac{1}{2}O_2(g)\rightarrow CO_2(g)    \Delta H^o_2=-282.7kJ

First we will reverse the reaction 1 and multiply equation 2 by 3 then adding both the equation, we get :

(1) Fe_2O_3(s)\rightarrow 2Fe(s)+\frac{3}{2}O_2(g)    \Delta H^o_1=+824.2kJ

(2) 3CO(g)+\frac{3}{2}O_2(g)\rightarrow 3CO_2(g)    \Delta H^o_2=3\times (-282.7kJ)=-848.1kJ

The expression for final enthalpy is,

\Delta H=\Delta H^o_1+\Delta H^o_2

\Delta H=(+824.2kJ)+(-848.1kJ)

\Delta H=-23.9kJ

Therefore, the enthalpy change of reaction is -23.9 kJ

7 0
3 years ago
Other questions:
  • 2Ag + H2S ? Ag2S + H2 Which statement is true about this chemical equation? A) Ag (silver) is oxidized and H (hydrogen) is reduc
    12·2 answers
  • In the lab there is a vile of mercury and it has a mass of 43.0 grams. If the density of mercury is 13.6 g/mL, what is the volum
    12·1 answer
  • What volume is occupied by 100.0 grams of chlorine gas (Cl2) at STP
    12·1 answer
  • I will give brainliest. Which one of the choices below is the best definition of a force?
    14·2 answers
  • Diamond is an allotrope of :
    6·2 answers
  • Please I need help with Chemistry ! Questions in attachment, I'LL GIVE THE BRAINLEST AND POINTS ! I need it soon !!
    14·1 answer
  • HELPPPPPP PLEASE
    14·1 answer
  • Most of the oxygen in the environment is made by
    8·1 answer
  • Chemical formula of Nascent Hydrogen is *<br>a) H2<br>b) H<br>c) HCl<br>d) HOCl​
    5·1 answer
  • A solution containing aluminium ions reacts with a solution containing hydroxide ions to form a
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!