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
Molodets [167]
3 years ago
10

Express the following number using scientific notation 5,610,000??

Chemistry
1 answer:
cestrela7 [59]3 years ago
5 0
5.61 x 10^8 (this might not be entirely right, haven’t used scientific notation in a while)
You might be interested in
If we start with 1.000 g of strontium-90, 0.805 g will remain after 9.00 yr. This means that the of strontium-90 is ________ yr.
lesantik [10]

The question is incomplete, here is the complete question.

If we start with 1.000 g of strontium-90, 0.805 g will remain after 9.00 yr. This means that the half-life of strontium-90 is ________ yr.

a. 28.8 b. 30.9 c. 35.4 d. 32.2

Answer :  The half-life of strontium-90 is 28.8 years.

Explanation :

This is a type of radioactive decay and all radioactive decays follow first order kinetics.

First we have to calculate the rate constant.

Expression for rate law for first order kinetics is given by :

k=\frac{2.303}{t}\log\frac{a}{a-x}

where,

k = rate constant

t = time taken for decay process  = 9.00 year

a = initial amount or moles of the reactant  = 1.000 g

a - x = amount or moles left after decay process  = 0.805 g

Putting values in above equation, we get:

k=\frac{2.303}{9.00}\log\frac{1.00}{0.805}

k=0.0241\text{ year}^{-1}

To calculate the half-life, we use the formula :

k=\frac{0.693}{t_{1/2}}

0.0241\text{ year}^{-1}=\frac{0.693}{t_{1/2}}

t_{1/2}=28.8\text{ years}

Therefore, the half-life of strontium-90 is 28.8 years.

5 0
3 years ago
Sarah's class is studying soils. Her teacher, Ms. Jones, stated that plants will growth in any soil type. Students in Sarah's cl
ivanzaharov [21]

Answer: C)The smaller the soil particles, the more water and air available for plant growth.

Explanation:

4 0
3 years ago
Read 2 more answers
How can scientists determine what kind of atoms are in stars and nebulas?
statuscvo [17]
Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths.
Not sure if this is 100% but I hope it helps.
4 0
2 years ago
Which balanced equation represents a fusion reaction?
lyudmila [28]

<span> </span><span>Fusion reaction is a type of nuclear reaction where two or more nuclei combine or collide to form an element with a higher atomic number. This happens when the collision is in a very high speed. In this process, some of the matter of the fusing nuclei is converted to energy.</span>

3 0
3 years ago
Hi Please help me, thank you
seropon [69]

Answer:

C I might be wrong tho

Explanation:

3 0
3 years ago
Other questions:
  • Select all that apply. what intermolecular forces stabilize a lipid bilayer?
    14·1 answer
  • The solubility product constant for mg(oh2(s is 1.2x10^-11 calculate solubility of magnesium hydroxide in mol/l
    5·1 answer
  • Give three chemical and physical properties of potassium, sodium,lithium
    5·1 answer
  • A volume of 129 mL of hydrogen is collected over water. The water level in the collecting vessel is the same as the outside leve
    13·1 answer
  • The yearly amounts of carbon emissions from cars in Belgium are normally distributed with a mean of 13.9 gigagrams per year and
    10·1 answer
  • What form of matter is made of only one type of atom
    7·1 answer
  • What document, signed by the district attorney, authorizes the search of a building for the purpose of collecting evidence at a
    5·2 answers
  • - Which scientist is given the credit for making the element?
    10·2 answers
  • For the following example, list the given and unknown information (including gratis or moles)
    13·1 answer
  • An atom X has atomic number 15,it accepts 3 electrons in other to become stable,determine the,*Number of protons of the atom. *D
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!