Name three machines which convert straight motion to circular motion.

What energy is defined as the energy of motion

Veronika [31]

Answer:

I believe it is kinetic energy

Hope this is right .-.

5 0

3 years ago

Is a 93.3% solution dilute or concentrated? Dilute Concentrated

oksano4ka [1.4K]

Answer:

Concentrated

Explanation:

Concentration measures the amount of solute in a solution. There are many expressions of concentration. Some of then are percentage (mass/mass, volume/mass, volume/volume), molarity, molality, mole fraction, among others.

When a solution has a high concentration it is said that it is concentrated; when a solution has a low concentration is is said that is is diluted.

Concentrated solutions expressed in percentage typically have about 80 - 90% (or more) of solute.

Diluted solutions expressed in percentage, tipylcally have about 10% - 20% or less.

But they are not fixed limits. You might say that a 85% solution is concentrated. Acids at 75 % sure are concentrated.

Hence, a 93.3% solution is concentrated, definitely.

3 0

3 years ago

If 34.22 grams of C2H4 reacts with excess oxygen, how many mLof carbon dioxide will form, at 21°C and 99.1kPa?

Kisachek [45]

You can find the ideal gas law (the formula) constants (r) on the internet :)

4 0

2 years ago

A home solar energy storage unit uses 4.75 ✕ 102 L of water for storing energy. On a sunny day, the water absorbed 2.75 ✕ 104 kJ

Sav [38]

Answer : The water's temperature change will be, $13.85^oC$

Explanation : Given,

Density of water = 0.998 g/mL

Volume of water = $4.75\times 10^2L=4.75\times 10^5mL$

(conversion used : 1 L = 1000 mL)

Specific heat of water = $4.184J/g^oC$

Heat absorbed = $2.75\times 10^4kJ=2.75\times 10^7J$

(conversion used : 1 kJ = 1000 J)

First we have to determine the mass of water.

$\text{Mass of water}=\text{Density of water}\times \text{Volume of water}$

$\text{Mass of water}=(0.998g/mL)\times (4.75\times 10^5mL)=474050g$

Now we have to calculate the change in temperature of water.

Formula used :

$Q=m\times C_w\times \Delta T$

where,

Q = heat absorbed by water

m = mass of water

$C_w$ = specific heat of water

$\Delta T$ = change in temperature

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

$2.75\times 10^7J=474050g\times 4.184J/g^oC\times \Delta T$

$\Delta T=13.85^oC$

Therefore, the water's temperature change will be, $13.85^oC$

8 0

3 years ago

Pls help I don’t understand: Which of these is a balanced chemical reaction?

nata0808 [166]

Answer:

C) 2CO + O₂ → 2CO₂

Explanation:

The equation C is correct.

2CO + O₂ → 2CO₂

This equation have four oxygen atom and two carbon atoms on both side of equation. So it is correctly balanced.

All others are incorrect:

A) CO + O₂ → CO₂

this is incorrect because there are three oxygen atoms on left while two atoms on right.

B) CO + 2O₂ → 2CO₂

this is incorrect because there are five oxygen atoms on left while four atoms on right.

D) 2CO + 2O₂ → 2CO₂

this is incorrect because there are six oxygen atoms on left while four atoms on right.

3 0

2 years ago