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
Gala2k [10]
3 years ago
9

Three-year-old Ben and his father are playing with a ball at the park. Ben's father throws a

Chemistry
2 answers:
GenaCL600 [577]3 years ago
8 0

Answer:

His dad knows about gravity and, unless gravity was not working, anything with mass will be pulled back to earth

Explanation:

:)

Ronch [10]3 years ago
3 0

gravity

Explanation:

Newton's first law of motion is often stated as. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

You might be interested in
Gaseous neon has a density of 0.900 g/L at standard conditions. How many neon atoms are in 1.00 L of neon gas at standard condit
Anvisha [2.4K]

Answer: 1.348 ×10^23 atoms

Explanation:

Given that volume = 1.00L

At standard condition, the volume of a gas is 22.4L/mol (at S.T.P)

Volume = mole /volume at STP

1 = mole/22.4

Mole= 22.4mol.

Also

Mole = number of atoms /Avogradro constant

Where avogrado's constant = 6.02×10²³

22.4 = number of atoms/6.02×10²³

Number of atoms = 1.348×10^25atoms

3 0
3 years ago
The ionization constant of lactic acid ch3ch(oh) co2h am acid found in the blood after strenuous exercise is 1.36×10^-4 If 20.0g
lana66690 [7]

Answer:

Explanation:

CH₃CHOHCOOH    ⇄    CH₃CHOHCOO⁻   +    H⁺

ionisation constant = 1.36 x 10⁻⁴ .

molecular weight of lactic acid = 90 g

moles of acid used = 20 / 90

= .2222

it is dissolved in one litre so molar concentration of lactic acid formed

C = .2222M

Let n be the fraction of moles ionised  

CH₃CHOHCOOH    ⇄    CH₃CHOHCOO⁻   +    H⁺

C  - nC                                          nC                  nC

By definition of ionisation constant Ka

Ka = nC x nC / C - nC

= n²C ( neglecting n in the denominator )

n² x .2222 = 1.36 x 10⁻⁴

n = 2.47  x 10⁻²

nC = 2.47  x 10⁻² x .2222

= 5.5 x 10⁻³

So concentration of hydrogen or hydronium ion = 5.5  x 10⁻³ g ion per litre .

6 0
2 years ago
How many significant figures are in the following measurement: 68.99 mL
Tanzania [10]

Answer:

Count how many significant figures are in a number, and find which digits are significant. You can use this calculator for significant figures practice: Test your ability to find how many significant figures are in a number.Enter whole numbers, real numbers, scientific notation or e notation. Example inputs are, 3500, 35.0056, 3.5 x 10^3 and 3.5e3.

Explanation:

3 0
3 years ago
Find the product of (x+a)(x-a)​
musickatia [10]

Answer:

x^2 - a^2

Explanation:

5 0
2 years ago
What is the average atomic mass of an element if it exists 75.77% at a mass of 34.969 g/mol and 24.23% at a mass of 36.966 g/mol
Slav-nsk [51]

Answer:

35.453g/mol is the average atomic mass of the element

Explanation:

The average atomic mass of an element is defined as the sum of the mass of its isotopes multiplied by its natural abundance.

The element of the problem has 2 isotopes:

The first with a mass of 34.969g/mol and its abundance is 75.77%

The second has a mass of 36.966g/mol and its abundance is 24.23%

Its natural abundance is:

34.969g/mol * 75.77% + 36.966g/mol * 24.23%

<h3>35.453g/mol is the average atomic mass of the element</h3>
3 0
3 years ago
Other questions:
  • A compound contains 39.0% potassium, 1.01% hydrogen, 12.0% carbon and 47.9% oxygen. Find its empirical formula
    11·1 answer
  • As the atomic numbers of the elements in column IIA increase, the size of the atoms generally
    8·2 answers
  • Describe what conditions exist in water molecules to make them dipolar.
    15·1 answer
  • The fertilizer ammonium sulfate, (nh4)2so4, is prepared by the reaction between ammonia (nh3) and sulfuric acid: 2nh3(g) + h2so4
    6·1 answer
  • What is the mass of the 3.7 mol pbo2?
    9·1 answer
  • How would u describe the cells that make up the parts of your eye?​
    12·1 answer
  • How many moles of carbon are in 3.7 moles of C 8 H11 NO2
    9·1 answer
  • A solution that has a large amount of dissolved solute is called
    15·1 answer
  • Nitric acid with a concentration of 1mol/dm has a pH
    8·1 answer
  • What is the formula for the compound formed when a potassium ion (K ) and a sulfide ion (S2-) unite?.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!