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3 years ago

11

A mineral breaks into flat sheets when struck with a rock hammer. Which property of a mineral is being measured? A. streak B. cl

eavage C. hardness D. color

2 answers:

Aleonysh [2.5K]3 years ago

8 0

The answer is the hardness

Shkiper50 [21]3 years ago

5 0

It is the Hardness.hope you have any other questions.

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Write any three acids which are used in our daily life. Also, write an application of each

lidiya [134]

Sodium fluoride- to brush teeth
Citric acid- orange juice for breakfast
Sodium hydroxide- cleaning agent

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2 years ago

radioisotope actinium 225 has half life of 10 days, I begin with 16 kg of this isotope, how much will remain after 40 days?

Igoryamba

$N(t)=N_{0}(\frac{1}{2})^\frac{t}{\tau_{_\frac{1}{2}}}}\\\\
N_{0}=16kg\\
t=40days\\
\tau_{_\frac{1}{2}}}=10days\\\\\\
N(t)=16kg*(\frac{1}{2})^{\frac{40}{10}}=16kg*\frac{1}{16}=1kg$

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2 years ago

What is power? (2 points)

damaskus [11]

Answer:

I believe

Explanation:

I believe that the answer is B, but I could be wrong. I think it's How much work can be done in a given time, because, In physics, power is the amount of energy transferred or converted per unit time.

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2 years ago

An isotope of cesium has 55 protons and 78 neutrons. What is the mass number of this isotope?

mixer [17]

The only stable caesium isotope is 133Cs, with 78 neutrons.

Hope this answers your Q

4 0

3 years ago

Consider the following reaction:

RUDIKE [14]

Answer:

H+ + Cl- + OH- + Ca2+ -> Na+ + Cl- + H2O

Explanation:

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3 years ago