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
fomenos
3 years ago
6

Hi can someone help me with this question! First one to answer it I will make u brainliest

Chemistry
2 answers:
Scrat [10]3 years ago
8 0

Answer:

(B) Test 2

Explanation:

The entire substance changed, and turned into a liquid.

skad [1K]3 years ago
7 0

Answer:

Test 2

Explanation:

............................................

You might be interested in
38.0 mL of a 0.026 M solution of HCl is needed to react completely with a 0.032 M NaOH solution. Calculate the number of moles o
svet-max [94.6K]

<u>Answer:</u>

<em>The number of moles  of HCl actually present is 0.000988</em>

<u>Explanation:</u>

<em>The balanced chemical equation of the given reaction is </em>

HCl+NaOH \rightarrow NaCl+H_2 O

Here one mole of HCl reacts with one mole of NaOH to form one mole of NaCl and one mole of  water. Here the molarity of HCl is given as 0.026M.

<em>molarity of NaOH is 0.032M </em>

molarity is the number of moles per unit volume of solution.

we have to calculate the number of moles in 36 mL of HCl.

<em>38 mL=36/1000=0.038L </em>

<em>the number of moles in 38 mL of HCl is given by </em>

<em>no of moles =0.026 \times 0.038=0.000988</em>

5 0
4 years ago
Suppose that .625 mol HBr partially react with Li to give .278 mol H2. Determine the number of moles HBr remain. SHOW PROCESS, I
Evgen [1.6K]

Answer:

gay

Explanation:

6 0
3 years ago
Which best describes glucose?
horrorfan [7]

Answer:

B.

Explanation:

7 0
3 years ago
Swer all parts. (a) What is the wavelength (in nm) of radiation that has an energy ...
bagirrra123 [75]

Answer:

a) The wavelength is around 33.8 nm = 3.38*10⁻¹ nm

b) Ultraviolet

Explanation:

a) The energy (E) of a photon is related to its wavelength (λ) by the Planck's equation:

E = h\frac{c}{\lambda}----(1)

where h = Planck's constant = 6.626*10^-34 Js

c = speed of light = 3*10^8 m/s

E = 3.55*10^6 J/mol

The energy in terms of J/photon is:

=\frac{3.55*10^{6} J/mol*1mol}{6.023*10^{23} photons } =5.89*10^{-18} J/photon

Based on eq(1)

\lambda = h\frac{c}{E}=6.626*10^{-34}Js*\frac{3*10^{8}m/s}{5.89*10^{-18}J}=3.38*10^{-8}m

The wavelength is around 33.8 nm = 3.38*10⁻¹ nm

b) In the electromagnetic spectrum the ultraviolet range extends from 390 nm-8.82 nm

The calculated wavelength of 33.8 nm should fall in the UV range.

5 0
3 years ago
Use a spreadsheet and construct curves for the following titrations. Calculate potentials after the addition of 10.00, 25.00, 49
Lena [83]
Yo you uo i don't really knwo i'm really sootbdiskdis
6 0
3 years ago
Other questions:
  • Complete each sentence using the drop-down menus.
    12·2 answers
  • How many grams of sodium nitrate will dissolve in 50 g of water at 20 degrees Celsius?
    14·1 answer
  • Determine the identity of the daughter nuclide from the positron emission of 6832ge. determine the identity of the daughter nucl
    9·1 answer
  • Given the reaction: 6 NaOH + 2 Al ---&gt; 2 Na3AlO3 + 3 H2
    12·1 answer
  • The cycle repeats when the carbon stored in the atmosphere as carbon dioxide gas is taken in.
    11·2 answers
  • Select all that apply.
    8·1 answer
  • 3. How has the HST managed to withstand harsh space conditions and operate for
    6·1 answer
  • Which is not a property of metal * 1 point conductivity
    5·2 answers
  • PLS HURRYThe moon does not light up by itself. Instead, it reflects light from the sun. Question 10 options: True False
    9·1 answer
  • malonyl-coa is an intermediate in fatty acid synthesis. it also regulates fatty acid metabolism. which of the molecules regulate
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!