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
kondaur [170]
3 years ago
9

Question 1

Chemistry
1 answer:
maxonik [38]3 years ago
3 0

Answer:

it is 2 degrees Celcius

Explanation:

5try54554555y5

You might be interested in
Calculate the mass/volume percent of a NaCl solution in which 140 g of NaCl is dissolved in enough water to give a total volume
Len [333]
Mass per volume percent is simply calculated by getting the ratio of the mass in g of solute and the volume in mL of the solution multiplied by 100 percent. In the problem, we are given all the required values. Calculation is as follows:

%w/v = 140 / 1590 x 100 = 8.81%
7 0
3 years ago
What kind of radioactive element is useful for dating an object?
OlgaM077 [116]

The kind of radioactive element is useful for dating an object is one with a half-life close to the age of the object.

<h3>What are radioactive elements?</h3>

Radioactive elements are elements that involved in radioactivity and this comprises of atoms or particles in their nuclei whose atomic nuclei are not stable and they emit radiations to maintain stability.

Therefore, The kind of radioactive element is useful for dating an object is one with a half-life close to the age of the object.

Learn more about radioactive elements below.

brainly.com/question/10257016

#SPJ1

4 0
2 years ago
When you add an inert gas, the reaction
julsineya [31]

Answer: When an inert gas is added to the system in equilibrium at constant pressure, then the total volume will increase.

Explanation:

3 0
2 years ago
100 POINTS PLSSS HELPPP
VARVARA [1.3K]

Whereas ionic bonds join metals to non-metals, metallic bonding joins a bulk of metal atoms. ... Sodium metal is therefore written as Na, not Na+. ... Both of these factors increase the strength of the bond still further. ... Heat capacity: This is explained by the ability of free electrons to move about the solid.

6 0
3 years ago
A sample was prepared by mixing 18. ml of 3.00 x 10^-3 m crystal violet (cv) with 2.00 ml of 0.250 m naoh. calculate the resulti
Aleks [24]

Answer : The resulting concentrations of CV and NaOH are 0.0027 M and 0.025 M respectively.

Explanation :

Step 1 : Find moles of crystal violet and NaOH.

The molarity formula is

Molarity = \frac{mol}{L}

Molarity of crystal violet = 3.00 \times 10^{-3} = \frac{mol (CrystalViolet)}{L}

The volume of crystal violet solution is 18 mL which is 0.018 L.

Moles of crystal violet = 3.00 \times 10^{-3} \times 0.018 = 5.4 \times 10^{-5}

Moles of crystal violet = 5.4 x 10⁻⁵

Moles of NaOH = Molarity \times L = 0.250 \times 0.00200 = 5.00 \times 10^{-4}

Moles of NaOH = 5.00 x 10⁻⁴

Step 2 : Find total volume of the solution

The total volume of the solution after mixing NaOH and crystal violet is

0.018 L + 0.00200 = 0.020 L

Step 3 : Use molarity formula to find final concentrations

Molarity of crystal violet = \frac{mol(CrystalViolet)}{Total Volume(L) } = \frac{5.4 \times 10^{-5}}{0.020} = 2.7 \times 10^{-3}

Final concentration of CV = 0.0027 M

Molarity of NaOH= \frac{mol(NaOH)}{Total Volume(L) } = \frac{5.00 \times 10^{-4}}{0.020} = 0.025 \times 10^{-3}

NaOH is a strong base and dissociates completely as follows.

NaOH (aq) \rightarrow Na^{+} (aq) + OH^{-} (aq)

The mole ratio of NaOH and OH⁻ is 1:1 . Therefore the concentration of OH⁻ is same as that of NaOH.

Concentration of OH⁻ = 0.025 M

8 0
3 years ago
Other questions:
  • Decide which element probably formed a compound with hydrogen that has a chemical formula most and least similar to the chemical
    8·2 answers
  • How do sulfur and phosphorus move from the biotic to the abiotic pools during their cycle?
    15·1 answer
  • Decreasing order of C-C bond length is 1) ethene 2)ethyne 3) benzene 4) ethane
    7·1 answer
  • What is the ground state electron configuration of a neutral atom of titanium
    13·1 answer
  • A sample of neon effuses from a container in 77 seconds. The same amount of an unknown noble gas requires 157 seconds. Identify
    15·1 answer
  • Two identical containers, one red and one yellow, are inflated with different gases at the same volume and pressure. Both contai
    13·1 answer
  • The average kinetic energy of molecules is proportional to the temperature of the gas molecules (in kelvin). true false
    7·1 answer
  • The volume of water in a graduated cylinder should be read _________________ the meniscus.
    14·2 answers
  • If the statement is true, select True. If it is false, select False.
    7·1 answer
  • Cells are mostly made of
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!