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
d1i1m1o1n [39]
3 years ago
5

the atoms of a certain element each contain 11 protons and 1 valence electron. what's the element and it's chemical reactivity?

Chemistry
1 answer:
Harrizon [31]3 years ago
8 0
The element Sodium (Na) has 11 protons and 1 valence electron. 
You might be interested in
Which of the following is an example of an environmental problem caused by chemicals
Neko [114]

Answer:

A

Explanation:

All of the other options are ways that could help the environment from the chemicals, but if they just continue to use the chemicals then it would hurt the environment

7 0
3 years ago
The ph of a 0.15 m aqueous solution of naz (the sodium salt of hz) is 10.7. what is the ka for hz?
andrew-mc [135]

Answer:  
NaZ + H2O <----> HZ + OH- 
 [OH-] = [HZ] 
 [NaZ] = 0.15 M 
 pH = 10.7, so the pOH = 14-10.7 = 3.3; [OH-] = 10^-3.3 = 5.01E-4 
 kb = [OH-][HZ]/[NaZ] = (5.01E-4)^2/0.15 = 1.67E-6 
 ka = kw/kb = 1E-14/1.67E-6 = 5.99E-9 = 6.0E-9
5 0
3 years ago
Gasoline has an octane number of 70.
mariarad [96]
Best Answer: o.n. = 70 means 70% isoctane for which o.n. = 100 and 30% of heptane for which o.n. = 0
5 0
4 years ago
Which has a positive impact on land
sergejj [24]

\huge\tt\fbox\pink{↪Answer:–}

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

\red\bigstar\:Explanation

<h3>Option c Deforestation.</h3>

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

<h2>I hope it will help you. </h2>
7 0
2 years ago
Read 2 more answers
Calculate the energy required to heat of 1.50 kg iron from -7.8 C to 15.0 C . Assume the specific heat capacity of silver under
Leni [432]

Answer : The energy required to heat of 1.50 kg iron is, 1.5\times 10^4J

Explanation :

Formula used :

Q=m\times c\times \Delta T

or,

Q=m\times c\times (T_2-T_1)

where,

Q = heat required = ?

m = mass of iron = 1.50 kg  = 1500 g

c = specific heat of iron = 0.450J/g^oC

T_1 = initial temperature  = -7.8^oC

T_2 = final temperature  = 15.0^oC

Now put all the given value in the above formula, we get:

Q=1500g\times 0.450J/g^oC\times (15.0-(-7.8))^oC

Q=15390J=1.5\times 10^4J

Therefore, the energy required to heat of 1.50 kg iron is, 1.5\times 10^4J

6 0
3 years ago
Read 2 more answers
Other questions:
  • In the laboratory, a quantity of I2 was reacted with excess H2 to give 1.26 moles of HI. It is also known that the percent yield
    8·1 answer
  • Find the density of a substance that’s had a volume of 24.7mL and a mass of 49.1g. Give the answer with two decimals.
    13·2 answers
  • A. Based on the activation energies and frequency factors, rank the following reactions from fastest to slowest reaction rate, a
    12·1 answer
  • For a particular experiment, Nadia must measure the following quantities:
    15·2 answers
  • PLEASE HELP ME!
    7·2 answers
  • What are examples of a Theory ?
    11·1 answer
  • Write the balanced chemical equation for the dissociation reaction of thiosulfuric acid.
    15·1 answer
  • Why do not all rock types contain fossils?
    12·1 answer
  • A transverse wave moves a medium at an abtuse angle to the wave , true or false ?​
    14·1 answer
  • Gimme ur bath water plzzzz​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!