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
fgiga [73]
2 years ago
15

Using the black numbers on the stopwatch to answer the questions.

Chemistry
2 answers:
maxonik [38]2 years ago
5 0

Answer: the top one is 5.3 s and the bottom one is tenths of seconds

Explanation:

qwelly [4]2 years ago
4 0

Answer:  The answer to the top one is 5.3 s and the bottom one is tenths of seconds

Explanation: Hope this helps plz mark!! Thx

You might be interested in
What is the [OH-]if the pH of a solution 10.62
Lerok [7]
As we know,

                     pH + pOH  =  14
Or,
                     pOH  =  14 - pH

Putting Value of pH,

                    pOH  =  14 - 10.62

                    pOH  =  3.38

pOH is converted into [OH⁻] as follow,

                   [OH⁻]  =  10⁻pOH             ∴ -pOH is in power, 10 means antilog
                                                               press shift and click log button
                   [OH⁻]  =  10⁻³°³⁸

                   [OH⁻]  =  0.0004168

                   [OH⁻]  =  4.16 × 10⁻⁴
5 0
3 years ago
Electromagnetic waves are used in many technological devices. Describe two examples of how energy from electromagnetic waves is
kykrilka [37]

Answer:

Electromagnetic waves are ubiquitous in nature (i.e., light) and used in modern technology—AM and FM radio, cordless and cellular phones, garage door openers, wireless networks, radar, microwave ovens, etc. These and many more such devices use electromagnetic waves to transmit data and signals.

Explanation:

i mean there's alot of stuff that have Electromagnetic waves in it i mean alot!

3 0
3 years ago
"In a test tube was add a piece of Zn and 2 mL of HCl (.1M). This reaction produced ZnCl2 and Hydrogen gas. This reactions is a:
omeli [17]

Answer:

d.  A single replacement reaction.

Explanation:

The zinc replaces the hydrogen in the hydrochloric acid.

4 0
3 years ago
3 6. 9 TIME REMAINING 57:16 A substance is made up of slow-moving particles that have very little space between them. Based on t
Natalka [10]

Answer:

It is not a gas because its particles do not have large spaces between them.

Explanation:

Solids and liquids have a lot of particles with few spaces between them. Also, gas particles move rapidly in each direction.

5 0
3 years ago
A student placed 15.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then
Ede4ka [16]

<u>Answer:</u> The mass of glucose in final solution is 1.085 grams

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}      ......(1)

Given mass of glucose = 15.5 g

Molar mass of glucose = 180.2 g/mol

Volume of solution = 100 mL

Putting values in equation 1, we get:

\text{Molarity of glucose solution}=\frac{15.5\times 1000}{180.2\times 100}\\\\\text{Molarity of glucose solution}=0.860M

To calculate the molarity of the diluted solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of the concentrated glucose solution

M_2\text{ and }V_2 are the molarity and volume of diluted glucose solution

We are given:

M_1=0.860M\\V_1=35.0mL\\M_2=?M\\V_2=0.500L=500mL

Putting values in above equation, we get:

0.860\times 35.0=M_2\times 500\\\\M_2=\frac{0.860\times 35.0}{500}=0.0602M

Now, calculating the mass of glucose by using equation 1, we get:

Molarity of glucose solution = 0.0602 M

Molar mass of glucose = 180.2 g/mol

Volume of solution = 100 mL

Putting values in equation 1, we get:

0.0602=\frac{\text{Mass of glucose solution}\times 1000}{180.2\times 100}\\\\\text{Mass of glucose solution}=\frac{0.0602\times 180.2\times 100}{1000}=1.085g

Hence, the mass of glucose in final solution is 1.085 grams

4 0
3 years ago
Other questions:
  • The pOH of a solution is 10.75. What is the concentration of OH– ions in the solution?
    12·1 answer
  • Draw the products of the acid-base reaction between stearic acid and OH-
    6·1 answer
  • Which statement is true regarding the function of a catalyst in a chemical reaction?Enzymes are biological catalysts capable of
    7·1 answer
  • What is the Oort cloud​
    10·1 answer
  • Potassium nitrate, KNO3, decomposes to form potassium nitrite, KNO2, and oxygen gas, O2. Write the balanced equation for this de
    8·2 answers
  • Please if any one know any question help me please
    8·1 answer
  • A 800mL of gas sample at STP is compressed to a volume of 200 mL, and temperature increased to 30 °C, what will be the new press
    12·2 answers
  • Calculate the energy of the lasers in a Blu-ray player, which emit at a wavelength of 4.05x10−7 m.
    13·1 answer
  • Here is a pic of me I'm ugly i dont have all my pics of me anymore lost it all
    6·2 answers
  • The heaviest known alkaline earth metal is radium, atomic number 88.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!