Sodium hydroxide dissolves in water ....

Answers

Answer 1

Answer:

n the reaction will be Exothermic, where heat will be released. .

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How does a graph with no trend differ from a graph with anomalous data points

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because you need it to see if your looking at the right thing

What are cathode rays made of

Answers

Answer:

electrons

Explanation:

they are composed of negatively charged particles also known as electrons

DON'T WORRY, THERE'S MORE
I JUST CAN'T FIT IT ALL INTO ONE QUESTION-

Answers

It’ll take him 4 hours

Please help i will give you 50 points what is the density of a book whose mass is 1,800 g and whose volume is 300 cm2

what is the mass of a ball whose density is 0.250 g/cm3 and whose is 200 cm3

Answers

Answer : The density of book is $6g/cm^3$

The mass of a ball is, 50 grams.

Explanation :

Part 1 :

Density : It is defined as the mass contained per unit volume.

Formula used :

$Density=(Mass)/(Volume)$

Given :

Mass = 1800 g

Volume = $300cm^3$

Now put all the given values in the above formula, we get :

$Density=(1800g)/(300cm^3)=6g/cm^3$

Therefore, the density of book is $6g/cm^3$

Part 2 :

Formula used :

$Density=(Mass)/(Volume)$

Given :

Volume = $200cm^3$

Density = $0.250g/cm^3$

Now put all the given values in the above formula, we get :

$0.250g/cm^3=(Mass)/(200cm^3)$

$Mass=0.250g/cm^3* 200cm^3=50g$

Therefore, the mass of a ball is 50 grams.

Answer: For your first question about the book, the answer is 6 g/cm^3. For the ball, your mass is 50 grams.

Explanation: density = mass/volume; for example: your book was 1,800 g. Divide that by 300 cm^3 to get 6g/cm^3. For the ball, mass = density*volume, so you need to multiply .250 by 200 cm^3

What are the 4 types of fire extinguishers are there

Answers

A-paper, wood, cardboard, and most plastics
B-flammable or combustible liquids such as gasoline, kerosene, grease and oil
C-electrical equipment, such as appliances, wiring, circuit breakers and outlets
D-chemical stuff (like a lab) They are for fires that involve combustible metals, such as magnesium, titanium, potassium and sodium.
I believe there is a K too - involve cooking oils, trans-fats, or fats in cooking appliances and are typically found in restaurant and cafeteria kitchens.

Physical and chemical properties

what is density when mass is 5.2 and volume is 0.117

Answers

Density = mass / volume

D = 5.2 / 0.117

D = 44.44

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