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2 years ago

Helpp me please it’s hard

Chemistry

1 answer:

STatiana [176]2 years ago

7 0

Answer:

I say A not only because it's a repeat of B but because it also doesn't talk about in which direction the velocity is.

Explanation:

Hope this helped.

A brainliest is always appreciated.

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How much energy is required to raise the temperature of 10.6 grams of gaseous neon from

Alona [7]

Answer:

Approximately $1.95 \times 10^{2}\; \rm J$ .

Explanation:

Look up the specific heat of gaseous neon:

$c = 1.03 \; \rm J \cdot g^{-1} \cdot K^{-1}$ .

Calculate the required temperature change:

$\Delta T = (37.9 - 20.0)\; \rm K = 17.9\; \rm K$ .

Let $m$ denote the mass of a sample of specific heat $C$ . Energy required to raise the temperature of this sample by $\Delta T$ :

$Q = c \cdot m \cdot \Delta T$ .

For the neon gas in this question:

$c = 1.03\; \rm J \cdot g^{-1}\cdot K^{-1}$ .
$m = 10.6\; \rm g$ .
$\Delta T = (37.9 - 20.0)\; \rm K = 17.9\; \rm K$ .

Calculate the energy associated with this temperature change:

$\begin{aligned}Q &= c \cdot m \cdot \Delta T \\ &= 1.03\; \rm J \cdot g^{-1}\cdot K^{-1} \times 10.6\; \rm g \times 17.9\; \rm K \\ &\approx 1.95 \times 10^{2}\; \rm J\end{aligned}$ .

3 0

3 years ago

how many particles of the part that orbits the nucleus is on the shell closest to the center of the atom?

kolezko [41]

There are 2 atoms orbiting it.

8 0

3 years ago

Read 2 more answers

CuCl2 + NaNO3 -------> Cu(NO3)2 + NaCl

pav-90 [236]

Answer:

what

Explanation:

3 0

3 years ago

[Need this right now, how do I do this???]

VARVARA [1.3K]

If your collecting at STP, you can use the converting constant of 22.4 litters/ One Mole. So, you would have convert ml to L and then go from there.

Also, when working with grams, you usually need to know the gas your working with. As one mole equals the atomic mass of an element in grams.

8 0

3 years ago

Notice that there are actually 3 chiral centers in the (1S)-[endo]-(-)borneol substrate. C1 and C2 are obvious. What is the othe

lesantik [10]

Answer:

C5 and its absolute configuration is R

Explanation:

<u>A chiral center is a carbon atom (C) which is bonded to four different groups, generating optical activity in the molecule. </u>

The first two chiral centers are:

C1: bonded to OH, H, the carbon chain (seen from left to right) and the carbon chain (seen fron rigth to left).
C2: bonded to CH3, the above C and its CH3, the carbon chain (seen from left to right) and the carbon chain (seen fron rigth to left).

The thrid chiral center is C5, which is bonded to H, the above C and its CH3, the carbon chain (seen from left to right) and the carbon chain (seen fron rigth to left).

The absolute configuration of it is R (clockwise)

5 0

4 years ago