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2 years ago

BRAINLIEST, 5 STARS, AND THANKS!!!tapos na po ako Dyan katapos kulang ma answer

Chemistry

1 answer:

mezya [45]2 years ago

5 0

Answer:

before

1. Prepare a handy emergency supply kit

2. Know the earthquake hazard in your area

3. Familiarize yourself with the exit routes

During

1. Do the DUCK, COVER AND HOLD.

2. stay away from trees and posts.

3. stay clam

4. Don't enter damaged buildings

After

1. Check yourself and others for injuries

2. Monitor news through radio and Tv.

Hope this will help you.

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______ transport requires the use of energy.

Leona [35]

Hi There! :)

Active <span>transport requires the use of energy. :)

Therefore A</span>

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3 years ago

Read 2 more answers

48 When an atom of the unstable isotope Na-24 decays, it becomes an atom of Mg-24 because the Na-24 atom spontaneously releases(

Crank

(1) a beta particle is your answer. Na-24 decays through beta decay, turning a neutron into a proton, electron (beta particle), and an neutrino.

4 0

3 years ago

3. The scientific study of how organisms are classified is called _____.

Vilka [71]

Hey mate!

Taxonomy is the <span>study of classification of organisms. Therefore, your answer is A.

Hope this helps!</span>

3 0

3 years ago

CaCO3 (s) + 176 KJ à CaO (s) + CO (g)

statuscvo [17]

Answer:

its d

Explanation:

3 0

3 years ago

Show your work with good use of units, rounding, and significant figures. [Hint: it is good practice to show the value of your a

mel-nik [20]

Heat required : 4.8 kJ

<h3>Further explanation </h3>

The heat to change the phase can be formulated :

Q = mLf (melting/freezing)

Q = mLv (vaporization/condensation)

Lf=latent heat of fusion

Lv=latent heat of vaporization

The heat needed to raise the temperature

Q = m . c . Δt

1. heat to raise temperature from -20 °C to 0 °C

$\tt Q=10\times 2.09\times (0-(-20)=418~J$

2. phase change(ice to water)

$\tt Q=10\times 333=3330~J$

3. heat to raise temperature from 0 °C to 25 °C

$\tt Q=10\times 4.18\times (25-0)=1045~J$

$\tt Q~tot=418+3330+1045=4793~J\rightarrow rounding~and~2~sig~figs=4.8~kJ$

3 0

2 years ago