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
Ahat [919]
2 years ago
6

Could someone plz help me? Giving brainliest

Chemistry
1 answer:
MrRissso [65]2 years ago
7 0

Answer:

its D

Explanation:

A and C are ruled out because an opnion of scientist doesnt make the a law and B is not always true

You might be interested in
Which of the following are reactants in the equation below? Select all that apply.
Paha777 [63]

Answer:

Zinc, copper sulfate

Explanation:

The reactants are the ones on the left side

8 0
2 years ago
How many moles of water are in 24.3 grams of water?
shtirl [24]

Answer:

Explanation: n=m/M(molar mass)

n=24.3 grams/(16+2x1.008)grams/moles(molar mass of H2O)

n=24.3grams/18.016grams/moles

n=1.35moles

8 0
3 years ago
Read 2 more answers
5 What is the concentration of a 25.0 mL HCl solution containing a phenolphthalein indicator that is titrated with 0.1 M NaOH if
Neporo4naja [7]
The correct answer is 0.137 M.

4 0
2 years ago
Read 2 more answers
If the pOH of a nitric acid (HNO3) solution is measured as 11, what is the concentration of HNO3 solution?
Illusion [34]

1 gram of HNO3 will be equal to 1/63.01 moles. Therefore, we can say that 1 liter of Nitric acid contains 15.6976 moles or in other words molarity of 70% (w/w) Nitric acid is equal to 15.6976 M.

Known values  

Molecular weight of HNO3 63.01 g/mole

Concentration of Nitric acid 70% (% by mass, wt/wt)

4 0
2 years ago
You have collected a tissue specimen that you would like to preserve by freeze drying. To ensure the integrity of the specimen,
Reika [66]

Answer:

The maximum pressure is 612.2 Pa

Explanation:

The pressure of the ice (P1) = 624 Pa

The temperature of the ice = 273.16 K

The maximum temperature the specimen = - 5 oC

                                                                     = -5 + 273 = 268K

The maximum Pressure the freeze drying can be will be (P2) = ?

Using Pressure law, which shows the relationship between pressure and temperature.

                        P1 / T1 = P2 / T2

                       P2 T1 = P1 T2

                       P2 = P1 T2 / T1

                       P2 = 624 × 268 / 273.16

                       P2 = 612.2 Pa

The maximum pressure at which drying can be carried out is 612.2 Pa

Check the attached document more explanation.   jjjjggggg

5 0
3 years ago
Other questions:
  • Which of the subatomic particles is responsible for the chemical behavior of a given atom?
    6·1 answer
  • The buildings in this old mine are made of metal. You can see over 100 years, the silver color of the buildings has changed. The
    15·2 answers
  • My topic is baseball heights.
    10·1 answer
  • What accident led percy julian to discover the method to separate progesterone from soybean oil?
    12·1 answer
  • Can someone please help me please?
    14·2 answers
  • In the 1 H NMR spectrum of chloroethane the methylene group is split into a quartet by the α and β nuclear spins of the protons
    8·1 answer
  • 2. (a) Solid calcium oxide was taken in a container and water was added slowly to it:
    13·1 answer
  • At what temperature will equal masses of HCl and NH4CI dissolve in 100g water?
    14·1 answer
  • 7. A sound wave travels 500m in 60 seconds. Calculate the speed of the sound?
    12·1 answer
  • A molecule is the smallest part of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!