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
Cloud [144]
3 years ago
7

If you hold a backpack in your hand, the force of gravity pulls it downward. What force keeps it from falling to the ground?

Chemistry
1 answer:
Deffense [45]3 years ago
7 0

Answer:

The force of the gases pushes downward at the same time that the gases push the rocket upwards. 1.

Explanation:

You might be interested in
Which of the following is true about a municipal bond with a put option? (A) An investor will exercise the option to put the bon
vampirchik [111]

Answer:

(A) An investor will exercise the option to put the bond if yields rise significantly

Explanation:

A put option on the bond is a mechanism to allow the buyer of the bond the ability to compel the lender to repay the principal on the bond. The put option offers the buyer of the bond the ability to collect the principal of the bond anytime they choose until maturity for any purpose.

Recall that once the price drops (that is, the yield increases), put options are exercised. If the yield significantly increased, the put choice on a municipal bond is executed.

5 0
3 years ago
Green house effect (7-8 points)
Sindrei [870]

Answer:

Below:

Explanation:

The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases.” These heat-trapping gases can be thought of as a blanket wrapped around Earth, keeping the planet toastier than it would be without them. ... Without carbon dioxide, Earth's surface would be some 33°C (59°F) cooler.

Hope it helps....

It's Muska...。◕ ‿ ◕。

4 0
3 years ago
Give the number of protons and the number of neutrons in the nucleus of each ofthe following isotopes: (a) Aluminum-25 (b) Techn
NeTakaya

Answer:(a)Aluminium-Al has 12 protons and 13neutrons (b) Technetium-Tc has 43 protons and 52neutrons (c) Tin-Sn has 50protons and 70 neutrons (d) Mercury - Hg has 80protons and 120neutrons

Explanation:

All elements on the periodic table are are arranged in terms of atomic number.

For a neutral atom( uncharged atom) , atomic number is the same as proton number. And the sum of number of proton and number of neutrons gives mass number.

Isotopes exist as a result of difference in mass number of atoms but the same atomic number, which implies isotopes of an element always have the same number of protons but different neutron numbers.

(a) Aluminum-25 has a mass number of 25 with atomic number of 12.

Since its a neutral atom, number of protons is 12 while neutron number can be deduced as,

Mass number = neutron number+ proton number

Neutron numbers= mass number - proton number

Neutron number= 25-12=13neutrons

(b) Technetium -95 has a mass number of 95 with atomic number of 43.

Since its a neutral atom, number of protons is 12 while neutron number can be deduced as,

Mass number = neutron number+ proton number

Neutron numbers= mass number - proton number

Neutron number= 95-43=52neutrons

(c) Tin-120 has a mass number of 120 with atomic number of 50

Since its a neutral atom, number of protons is 50 while neutron number can be deduced as,

Mass number = neutron number+ proton number

Neutron numbers= mass number - proton number

Neutron number= 120-50=70neutrons

(d) Mecury-200 has a mass number of 200 with atomic number of 80.

Since its a neutral atom, number of protons is 80 while neutron number can be deduced as,

Mass number = neutron number+ proton number

Neutron numbers= mass number - proton number

Neutron number= 200-80=120neutrons

7 0
3 years ago
A.<br> b.<br> c.<br> d.<br> Please help I'm desperate!!!
aleksandrvk [35]

Answer:

The answer for this question is D

4 0
3 years ago
Read 2 more answers
Thirty (30.0) milliliters of ethane (C2H6) occupy a container at STP. If the container is heated to 300.0 K and the pressure red
wariber [46]

Answer:

44.6millilitres

Explanation:

Using the general gas law equation as follows:

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (atm)

V1 = initial volume (L)

T1 = initial temperature (K)

P2 = final pressure (atm)

V2 = final volume (L)

T2 = final temperature (K)

According to this question;

V1 = 30mL

T1 = 273K (STP)

P1 = 1 atm (STP)

V2 = ?

T2 = 300K

P2 = 75.0 kPa = 75 × 0.00987 = 0.74atm

Using P1V1/T1 = P2V2/T2

1 × 30/273 = 0.74×V2/300

30/273 = 0.74V2/300

Cross multiply

300 × 30 = 273 × 0.74V2

9000 = 202.02V2

V2 = 9000/202.02

V2 = 44.55

V2 = 44.6millilitres.

6 0
3 years ago
Other questions:
  • Explain how you would make 450 mL of a .250M NaOH solution?
    6·1 answer
  • Two students are given the starting material benzoic acid and are asked to prepare benzaldehyde. The first student starts by ref
    8·1 answer
  • Question 5
    8·1 answer
  • Pls answer
    15·1 answer
  • Which liquid has the highest vapor pressure
    13·1 answer
  • 1 Mr. Chavez paid $14.32 total for 8 protein bars.
    14·1 answer
  • Question 1
    5·1 answer
  • The partial symbol for a particular ion is 26M2+ What are the number of electrons contained in one ion
    12·1 answer
  • The a-helices and b- sheets in protein make up its
    15·1 answer
  • Help plz! im not understanding
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!