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
Elena L [17]
2 years ago
8

I need help with my chemistry but you can only choose one correct answer​

Chemistry
2 answers:
azamat2 years ago
4 0

Answer:

Explanation:

photosynthesis

the given chemical reaction is photosynthesis.

During photosynthesis carbon dioxide absorbed by plants reacts with water in presence of sunlight to give glucose and oxygen.

lubasha [3.4K]2 years ago
3 0
It’s double replacement
You might be interested in
How many atoms is 100.0g of aluminum?
34kurt

Answer:

How many moles are present in 100.0 g of Al? What is the mass of 0.552 mol of Ag metal? Answer a: 3.706 mol

8 0
3 years ago
Anyone tryna help mee
devlian [24]

Answer:

It is a solid

4 0
2 years ago
A 75 g piece of gold (Au) at 1000 K is dropped into 200 g of H2O at 300K in an insulatedcontainer at 1 bar. Calculate the temper
Arturiano [62]

Answer:

the final temperature is T final = 308 K

Explanation:

since all heat released by gold is absorbed by water

Q gold + Q water = Q surroundings =0 (insulated)

Assuming first that no evaporation of water occurs , and denoting g as gold and w as water , then

Q gold = m g*cp g* ( T final - T initial g)

Q gold = m w*cp w* ( T final - T initial w)

where

m= mass

cp = specific heat capacity

T final = final temperature

T initial g and T initial w =  initial temperature of gold and water respectively

thus

Q gold + Q water = 0

m g*cp g* ( T final - T initial g) + m w*cp w* ( T final - T initial w) =0

m g*cp g* T final + m w*cp w* T final =  m g*cp g* T initial g+ m w*cp w* T initial w

T final = (m g*cp g* T initial g+ m w*cp w* T initial w)/(m g*cp g+ m w*cp w)

replacing values and assuming cp w = 1 cal/gK = 4.816 J/gK and cp g = 0.129 J/gK (from tables), then

T final =  (75 g*0.129 J/gK* 1000 K + 200 g * 4.816 J/gK * 300 K )/(75 g*0.129 J/gK*+ 200 g * 4.816 J/gK ) = 308 K

T final = 308 K

since T boiling water = 373 K and T final = 308 K , we confirm that water does not evaporate

therefore the final temperature is T final = 308 K

3 0
2 years ago
How many moles of water are in 1.23x10^18 water molecules
Harlamova29_29 [7]

By 1.23 x 1024 you mean 10 to the power of 24 molecules? If so all you need to do is divide the number of molecules you have by Avagadros number, 6.022 x 10^23. This will give you the mols of water, or the mols of anything, since there is always 6.022 x 10^23 molecules in 1 mol of substance.


1.23x10^24 atoms/6.022x10^23 atom/mol = 2.04 mol H20


6 0
2 years ago
Read 2 more answers
I need this all by today because I’m get 0 and my science teacher is being a
Shalnov [3]
The cnidarias life cycle has 2 life cycles polyp and medusa
7 0
3 years ago
Read 2 more answers
Other questions:
  • A) Select the strongest acid:H2Te, GeH4, AsH3, H2S, SiH3
    7·1 answer
  • When 58.5 g of NaCl is dissolved in 1 kg of water, what is the resulting molality?
    15·1 answer
  • At the same temperature and pressure, which state of matter has the highest density?
    15·2 answers
  • Is A B C or D I need help
    6·1 answer
  • To save time you can approximate the initial volume of water to ±1 mL and the initial mass of the solid to ±1 g. For example, if
    9·2 answers
  • Two samples of calcium fluoride are decomposed into their constituent elements. The first sample produced 0.154 g of calcium and
    11·1 answer
  • Which chemical equation is balanced?
    10·1 answer
  • How does increasing the temperature of a system affect the rate of chemical<br> reactions?
    10·1 answer
  • What minimum temperature is needed to dissolve 60 grams of NH4Cl in 100 g H2O?
    11·1 answer
  • Which is an aspect of the kinetic-molecular theory and can be used to explain the compressibility of plasma
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!