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
Pavlova-9 [17]
2 years ago
9

What is the effect of scary movies on pulse rates a. Independent b. Dependent:

Chemistry
2 answers:
ivolga24 [154]2 years ago
5 0

Answer:

Explanation:

It can increase your heart rate so if that helps??

OverLord2011 [107]2 years ago
4 0

Answer:

A

Explanation:

You might be interested in
Two methanol-water mixtures are contained in separate tanks. The first mixture contains 40.0 wt% methanol and the second contain
RoseWind [281]

Answer:

M_{per}= 52.86

W_{per}=47.14

Explanation:

<u>First mixture</u>:

40 wt% methanol - 60 wt% water 200 kg

m_{met1}=200 kg * 0.4= 80 kg

m_{wat1}=200 kg * 0.6= 120 kg

<u>Second mixture</u>:

70 wt% methanol - 30 wt% water 150 kg

m_{met2}=150 kg * 0.7= 105 kg

m_{wat2}=150 kg * 0.3= 45 kg

Final mixture:

m_{metF=80 kg + 105 kg= 185 kg

m_{watF}=120 kg + 45 = 165 kg

M_{per}=\frac{185 kg}{185 kg + 165 kg}*100= 52.86

W_{per}=\frac{165 kg}{185 kg + 165 kg}*100=47.14

If, the compositions are constant, the only variables are the mass of each mixture used in the final one, so there can be only one independent balance.

8 0
3 years ago
Calculate the pH of a solution that [H3O4] of 7.22x10-7M
schepotkina [342]
To calculate the pH of a solution that has a [H3O+] of 7.22x10^-7. You would do the following
pH=-log[H3O+]
pH=-log[7.22x10^-7]
pH=?
5 0
3 years ago
How many atoms of hydrogen are there in 18g of water ?
Bingel [31]

Answer:

They are 1.204×10^24 atoms of hydrogen present in 18 grams of water. In order to calculate this,it is necessary to compute the number of hydrogen moles present in the sample.

6 0
2 years ago
10. Which would not be a good solution to counter overpopulation?
Vikki [24]

Answer:

A. Encourage an increase in pollution in these countries

4 0
2 years ago
What is acide, Base and salt​
ss7ja [257]

Answer:

In acid – base chemistry, salts are ionic compounds that result from the neutralization reaction of an acid and a base. Basic salts contain the conjugate base of a weak acid, so when they dissolve in water, they react with water to yield a solution with pH greater than 7.0.

Explanation:

Hope this helped!

4 0
3 years ago
Other questions:
  • Atoms that have the same number of valence electrons in their outer shell
    7·1 answer
  • Which two solutions, when mixed together, will undergo a double replacement reaction and form a white, solid substance
    7·2 answers
  • Please help, I'm struggling with stoichiometry
    6·1 answer
  • Why clouds look white?​
    8·1 answer
  • 10. What effect does temperature have on molecular motion? Using this explanation, explain why both pressure and volume can decr
    8·1 answer
  • Bismuth has a density of 9.80 g/cm^3. What is the mass of 3.02 cm^3 bismuth?
    6·2 answers
  • Each of the solutions was prepared with the same concentration so that the effect of concentration (0.05 M) would not be introdu
    7·1 answer
  • Oliver heated tungsten cylinder weighing 60 g in a hot water bath. While that was heating , he added 40.37 g of distilled water
    12·1 answer
  • How are phase changes related to kinetic energy? Justify your response in TWO OR MORE COMPLETE SENTENCES.
    14·2 answers
  • I’m really confused can someone help me?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!