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
Nostrana [21]
3 years ago
8

How many grams of NaCl are needed to prepare 50.0 grams of 35.0% of salt solution?

Chemistry
1 answer:
nevsk [136]3 years ago
4 0

Answer:

17.5 g

Explanation:

Given data

  • Mass of solution to be prepared: 50.0 grams
  • Concentration of the salt solution: 35.0%

The concentration by mass of NaCl in the solution is 35.0%, that is, there are 35.0 grams of sodium chloride per 100 grams of solution. We will use this ratio to find the mass of sodium chloride required to prepare 50.0 grams of a 35.0% salt solution.

50.0gSolution \times \frac{35.0gNaCl}{100gSolution} = 17.5gNaCl

You might be interested in
When one atom contributes both bonding electrons in a single covalent bond, the bond is called a(n) ____?
Goshia [24]
I belive this is known as coordinate covalent bond.
hope this helps!
6 0
3 years ago
Aluminum metal reacts with dilute sulfuric acid to produce aluminum sulfate and hydrogen gas. what mass of aluminum will react w
SOVA2 [1]
Aluminium reacts with dilute sulfuric acid based on the following reaction:
<span>2Al + 3H2SO4 ..............> Al2 (SO4)3 + 3H2

From the periodic table:
mass of aluminium = 27 grams
mass of hydrogen = 1 gram
mass of oxygen = 16 grams
mass of sulfur = 32 grams

Therefore:
molar mass of aluminium = 27 grams
molar mass of sulfuric acid = 2(1) + 32 + 4(16) = 98 grams

From the balanced chemical equation:
2 moles of aluminium react with 3 moles of dilute sulfuric acid.
This means that 34 grams of Al react with 294 grams of the acid

To get the amount  of aluminium that reacts with </span><span>5.890 g of sulfuric acid, we will do cross multiplication as follows:
</span>amount of Al = (<span>5.890 x 34) / 294 = 0.6811 grams</span>
3 0
3 years ago
What causes atoms to form covalent bonds?
navik [9.2K]

Answer:

to attain stability atoms form covalent bonds

7 0
2 years ago
A common radio wavelength observed coming from astronomical objects is 21 cm. What temperature is associated with this radiation
qaws [65]

Answer:

The temperature associated with this radiation is 0.014K.

Explanation:

If we assume that the astronomical object behaves as a black body, the relation between its <em>wavelength</em> and <em>temperature</em> is given by Wien's displacement law.

\lambda_{max}=\frac{b}{T}

where,

λmax is the wavelength at the peak of emission

b is Wien's displacement constant (2.89×10⁻³ m⋅K)

T is the absolute temperature

For a wavelength of 21 cm,

T=\frac{b}{\lambda _{max} } = \frac{2.89 \times 10^{-3} m.K  }{0.21m} =0.014K

8 0
3 years ago
Why is the mass of the third subatomic particle ignored?
dmitriy555 [2]

Answer: The mass of electrons is mostly ignored because electrons are extremely small compared to neutrons and protons.

Explanation: A proton is about 1,836 times the size of an electron.

On the periodic table, the atomic number for each element can be found. This number is found by measuring the weight of 6.02 x 10^23 atoms of the element in grams. Electrons aren't ignored when finding exact math, but for the sake of simplification high school teachers will generally have you only count the number of protons and neutrons when calculating the mass of atoms.

3 0
1 year ago
Other questions:
  • Which atomic model was proposed as a result of J. J. Thomson’s work?
    13·2 answers
  • An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its
    12·1 answer
  • What is the molarity of a salt solution made by dissolving 250.0 grams of NaCl in 775 mL of solution?
    15·1 answer
  • What happens to Earth’s temperature as cloud cover increases? A. The temperature increases. B. The temperature decreases. C. The
    10·2 answers
  • Ins1502 assignment 03​
    13·1 answer
  • 1. How many moles of nitrogen monoxide can be made using 5.0 moles of oxygen in the following composition reaction?
    10·2 answers
  • Social Studies 3rd Period
    7·1 answer
  • What do u do when you butter in a tub melts i put it in my fridge but after 1 hour it has some kind of water in it or something
    15·1 answer
  • PLEASE HELP!!! I will mark Brainliest!!! How could you know if two substances were the same based upon 2 chemical reactions?
    10·2 answers
  • 2. Calculate the atomic mass of the following elements i. Silicon ii. Magnesium iii. Potassium.​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!