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
deff fn [24]
3 years ago
13

How many protons (p) and neutrons (n) are in an atom of sr? 38 p, 90 n 90 p, 38 n 38 p, 52 n 52 p, 38 n?

Chemistry
1 answer:
harina [27]3 years ago
3 0
Sr will always have 38 protons because that is its atomic number. Normally Sr has 38 protons and 49 neutrons yielding an atomic mass of 87. unless you are dealing with an isotope of Strontium in which 3 additional neutrons would give you the 53 neutrons in your answer, (38p, 52n).
You might be interested in
If Log 4 (x) = 12, then log 2 (x / 4) is equal to
Alexus [3.1K]

The value of log₂(x/4) is 22. Using the properties of the logarithm, the required value is calculated.

<h3>What are the required properties of the logarithm?</h3>

The required logarithm properties are

logₐx = n ⇒ aⁿ = x; and logₐ(xⁿ) = n logₐ(x);

Where a is the base of the logarithm.

<h3>Calculation:</h3>

It is given that,

log₄(x) = 12;

On applying the property logₐx = n ⇒ aⁿ = x; here a = 4;

So,

log₄(x) = 12 ⇒ 4¹² = x

⇒ x = (2²)¹² = 2²⁴

Then, calculating log₂(x/4):

log₂(x/4) = log₂(2²⁴/4)

              = log₂(2²⁴/2²)

              = log₂(2²⁴ ⁻ ²)

              = log₂(2²²)

On applying the property logₐ(xⁿ) = n logₐ(x);

log₂(x/4) = 22 log₂2

We know that logₐa = 1;

So,

log₂(x/4) = 22(1)

∴ log₂(x/4) = 22.

Learn more about the properties of logarithm here:

brainly.com/question/12049968

#SPJ9

8 0
1 year ago
The electrolyte that is used to make Hypochlorous Acid is made from Sodium Chloride (NaCl). the bottle says that the electrolyte
kumpel [21]

Answer:

63.9 grams. Yes, the Nacl was converted.  Maximum possible ppm is 540ppm.

Explanation:

I this is college level chemistry not regular high school chem.  

7 0
3 years ago
The store paid 4.50 for a book and sold it for $7.65.what is the profit as a percent of the cost to the store? A. 3. 15% b. 58.8
xeze [42]

Answer: This would be C.) 70%

Explanation:

4 0
2 years ago
Archaeology has shown that ancient people _____.
Readme [11.4K]
I would say developed technologies which somehow were lost

like the stone age: the stone hammer, who used that afterwards in the roman empire era and stuff?
6 0
3 years ago
Read 2 more answers
A 800N mountain climber scales a 160m cliff. How much work is done by the mountain climber?
Fittoniya [83]

Answer:

Work done, W = 128 kJ

Explanation:

Given that,

Weight of a mountain climber, F = 800 N

It climbs to a cliff that is 160 m high.

We need to find the work done by the mountain climber. The work done by an object is given by the formula as follows :

W = Fd

Put the values of F and d.

W = 800 N × 160 m

W = 128000 J

or

W = 128 kJ

So, 128 kJ of work is done by the mountain climber.

3 0
2 years ago
Other questions:
  • A balloon is filled with 3.8 l of helium gas at stp. approximately how many moles of helium are contained in the balloon?
    8·2 answers
  • Exactly 5.00 L of air at -50.0°C is warmed to 100.0°C. What is the new volume if the pressure remains constant?
    13·1 answer
  • A student weighed out a 2.055 g sample of a cobalt chloride hydrate, ConClmpH2O, where n, m, and p are integer values to be dete
    11·1 answer
  • How many sig figs are in 0.0050340​
    7·1 answer
  • Why do you think lab safety is important?
    13·2 answers
  • A bike tire contains a fixed amount of gas at a constant pressure. Initially, the tire contains 4.00 iters of air at 26 degrees
    14·2 answers
  • Calculate mL (4 sf) of 0.7500 M sodium hydroxide required to neutralize 35.00 mL of 0.7500 M phosphoric acid. Please input numbe
    13·1 answer
  • 2.50 x 10-14 \div÷ 1.25 x 10-12
    5·1 answer
  • Graph B
    10·1 answer
  • Why is the periodic table not arranged by atomic weight and instead arranged by atomic number?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!