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
prisoha [69]
3 years ago
12

The speed of a motorcycle increases from 10 kilometers per hour to 50 kilometers per hour in 9 seconds. What is its acceleration

?
Chemistry
1 answer:
Vesnalui [34]3 years ago
5 0

Answer:

well, it increased by 40 km/hr in 9 s, so the acceleration is

40/9 km/(hr-s)

Explanation:

You might be interested in
Write a balanced chemical equation for the incomplete combustion of gaseous ethane (C2H6). What is the sum of the coefficients i
Delicious77 [7]

Answer:

C2H6 +02 ===>Co2 + H20.

Explanation:

7 0
3 years ago
What are the controlled variables for water of crystallization experiment?
yarga [219]

Given what we know, we can confirm that as with any experiment, the control variable will be the one that through each trial of the experiment, no matter how many times it is performed, stays constant.

<h3>What is a controlled variable?</h3>
  • A variable that remains constant through an experiment.
  • They are used to compare results to the normal condition.
  • They are also used to isolate the changes to one factor at a time and thus know its exact effects on the outcome.
  • This increases the accuracy of the data and the subsequent conclusion.

Therefore, we can confirm that if a variable stays constant through each phase and trial of an experiment, it is considered to be a controlled variable and is useful in order to increase the accuracy of the conclusion.

To learn more about control variables visit:

brainly.com/question/17555102?referrer=searchResults

7 0
2 years ago
OMG PLEASE HELP!! THIS IS IMPORTANT!!
bogdanovich [222]

Answer:

The cell membrane is protective layer surrounding a cell.

5 0
2 years ago
Read 2 more answers
You need to produce a buffer solution that has a pH of 5.50. You already have a solution that contains 10 mmol (millimoles) of a
balandron [24]

Answer:

56.9 mmoles of acetate are required in this buffer

Explanation:

To solve this, we can think in the Henderson Hasselbach equation:

pH = pKa + log ([CH₃COO⁻] / [CH₃COOH])

To make the buffer we know:

CH₃COOH  +  H₂O  ⇄   CH₃COO⁻  +  H₃O⁺     Ka

We know that Ka from acetic acid is: 1.8×10⁻⁵

pKa = - log Ka

pKa = 4.74

We replace data:

5.5 = 4.74 + log ([acetate] / 10 mmol)

5.5 - 4.74 = log ([acetate] / 10 mmol)

0.755 = log ([acetate] / 10 mmol)

10⁰'⁷⁵⁵ = ([acetate] / 10 mmol)

5.69 = ([acetate] / 10 mmol)

5.69 . 10 = [acetate] → 56.9 mmoles

6 0
3 years ago
About one hundred thousand years ago, very fluid lava started erupting slowly and gently from a place near a plate boundary. Wha
victus00 [196]

a is the answer because all of the other answers are wrtong

3 0
3 years ago
Other questions:
  • In this Punnett square, what is the probability of the offspring being a heterozygous purple flower
    9·1 answer
  • Which of these terms describes the number of protons in the nucleus of an atom?
    12·2 answers
  • Does a light with low frequency and long wavelength have a lot or little energy?
    7·1 answer
  • 3.0 M HI Unknown NaOH initial burette reading 0.2 ml 0.7 ml final burette reading 47.6 ml 37.5 ml What is the concentration of t
    6·1 answer
  • How does a hydroelectric power plant convert energy?
    5·2 answers
  • Which word best discribes entropy
    9·1 answer
  • 18. Predict the products for this single replacement reaction.
    6·1 answer
  • Consider the following reaction: Solid zinc was added to 1.0 M HC1.
    12·1 answer
  • Write a chemical equation for the reaction between methane and bromine​
    8·2 answers
  • Calculate the moles of 70g of Li
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!