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
Oksi-84 [34.3K]
2 years ago
6

Why we add PH10 When we determine the zn ion​

Chemistry
1 answer:
KIM [24]2 years ago
8 0

Answer:

to make it basic from acidic

You might be interested in
What determines an object’s ability to float?
Nezavi [6.7K]
Simply put, density is how tightly “stuff” is packed into a defined space.

For example, a suitcase jam-packed with clothes and souvenirs has a high density, while the same suitcase containing two pairs of underwear has low density. Size-wise, both suitcases look the same, but their density depends on the relationship between their mass and volume.
Mass is the amount of matter in an object.
Volume is the amount of space that an object takes up in three dimensions.

Density is calculated using the following equation: Density = mass/volume or D = m/v.

If something is heavy for its size, it has a high density. If an object is light for its size it has a low density.

The relative densities of an object and the liquid it is placed in determine whether that object will sink or float.
3 0
2 years ago
Chalcopyrite is an ore with the composition cufes2. what is the percentage of iron in a 39.6 g sample of this ore? answer in uni
iren2701 [21]
<span>Well it depends on percentage by what, but I'll just assume that it's percentage by mass. For this, we look at the atomic masses of the elements present in the compound. Cu has an atomic mass of 63.546 amu Fe has 55.845 amu and S has 36.065 amu Since there are 2 molecules of Sulfur for each one of Cu and Fe, we'll multiply the Sulfur atomic weight by 2 to obtain 72.13 amu So we have not established the mass of the compound in amus 63.546 + 55.845 + 72.13 = 191.521 That is the atomic mass of Chalcopyrite. and Iron's atomic mass is 55.845 So to get the percentage, or fraction of iron, we take 55.845 / 191.521 Which comes out to 29.15% by mass Mass of the sample is not needed for this calculation, but since the question mentions it I would go ahead and check if the question isn't also asking for the mass of Iron in the sample as well, in which case you just find the 29.15% of 67.7g</span>
5 0
3 years ago
If a wave has a wavelength of 13 meters and a period of 0.005, what's the velocity of the wave? A. 2,600 m/s B. 260 m/s C. 1,300
Rina8888 [55]

Answer:

V = 2600ms⁻¹

Explanation:

Given parameters:

Wavelength(λ) = 13meters

Period (T) = 0.005s

Period(T) is the time it takes for a full cycle of vibration to pass through. It's unit is in seconds (s)

The Velocity of waves is expressed as:

V = fλ

Where f = frequency(s⁻¹)

Frequency of a wave is the number of waves that passes through a point per unit time

f = 1/T

Where T is the period

We can therefore express Velocity of waves as a function of period

V = λ/T

Inputing the parameters, we have:

V = 13m / 0.005s

V = 2600ms⁻¹

7 0
2 years ago
Read 2 more answers
Find the kinetic energy of the horse using KE=1/2 mv².
Dmitry [639]
KE=6,250Joules
You plug in your given numbers and remember to square 5 because that’s the speed
8 0
3 years ago
Read 2 more answers
PLEASE HELPPP
rusak2 [61]

Answer; molecule

Explanation:

5 0
3 years ago
Other questions:
  • Is ice melting in a drink a chemical change?
    15·1 answer
  • What is the percent yield of hbr if 85.00 g of hbr was formed from 30. g of h2?
    14·2 answers
  • What is a male function
    7·1 answer
  • How is kinetic energy related to the Kelvin scale?
    5·1 answer
  • How many grams of ammonium chloride (NH4Cl) would be required to make a saturated solution in 1000 grams of water at 50 degrees
    15·1 answer
  • Which of the following best describes an atom? * the smallest unit of living things only the smallest unit of an element the sma
    5·1 answer
  • Many common liquids have boiling points that are less than 110°C, whereas most metals are solids at room temperature and have mu
    7·1 answer
  • The outline of a partial periodic table is shown.
    15·2 answers
  • Please answer's these scientist answer's
    6·2 answers
  • What is the least appropriate hypothesis for Eric to make?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!