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3 years ago

Pls someone help ASAP

Chemistry

1 answer:

Alisiya [41]3 years ago

6 0

Answer:

i cant see the picture good

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1. If we used 0.0100 moles of K2CO3, how many moles of SrCO3 can be expected to form?

faltersainse [42]

Answer:

0.01 moles of SrCO₃

Explanation:

In this excersise we need to propose the reaction:

K₂CO₃ + Sr(NO₃)₂ → 2KNO₃ + SrCO₃

As we only have data about the potassium carbonate we assume the strontium nitrite as the excess reactant.

1 mol of K₂CO₃ react to 1 mol of Sr(NO₃)₂ in order to produce 2 moles of potassium nitrite and 1 mol of strontium carbonate.

Ratio is 1:1. In conclussion,

0.01 mol of K₂CO₃ must produce 0.01 moles of SrCO₃

3 0

3 years ago

Claire is investigating potential and kinetic energy using a large ball. For her investigation, Claire will stand at the top of

uranmaximum [27]

The ball's potential energy will decrease, and its kinetic energy will increase.

Explanation:

The ball's potential energy will decrease down the slope and its kinetic energy will increase.

Kinetic energy is the energy due to the motion of a body.

K. E = $\frac{1}{2}$ m v²

m is the mass of the ball

v is the velocity of the ball.

Potential energy is the energy due to the motion of a body down slope.

It is expressed as:

P.E = mgh

m is the mass of ball

g is the acceleration due to gravity of the body

h is the height.

We can see as the body drops down the slope, the height diminishes and the velocity increases.

learn more:

Potential energy brainly.com/question/10770261

#learnwithBrainly

3 0

3 years ago

The steps of scientific method in order are?

ArbitrLikvidat [17]

The answer is choice B

8 0

3 years ago

Read 2 more answers

If you need 0.0592 moles of nitrogen, how many grams of nitrogen do you need to mass(weigh) on the

navik [9.2K]

Urchin tc yc you txutxurzyrxtuciyvuoxutxurx

8 0

2 years ago

An FM radio station broadcasts electromagnetic radiation at a frequency of 103.4 MHz (megahertz; MHz =106sâ€“1). Calculate the w

kap26 [50]

Answer:

$Wavelength=2.899\ m$

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength$

c is the speed of light having value $2.998\times 10^8\ m/s$

Given, Frequency = 103.4 MHz = $103.4\times 10^{6}\ Hz$ ( as 1 MHz = 10⁶ Hz)

Thus, Wavelength is:

$Wavelength=\frac{c}{Frequency}$

$Wavelength=\frac{2.998\times 10^8}{103.4\times 10^{6}}\ m$

$Wavelength=2.899\ m$

5 0

3 years ago