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den301095 [7]
3 years ago
14

PLEASE HELP ASAP - WILL GIVE YOU BRAINIEST Can someone please help me figure out the correct answer to a science problem? I need

help identifying the independent variable, dependant variable, control group, and experimental group in a word problem. If you can please help, I will type out the word problem.
Chemistry
1 answer:
Alexxandr [17]3 years ago
8 0

independent variable: how much bread is there

dependant variable: temperature, location, time, size.

hypothesis, the one with the bread will be way more moist than the one without.

control group: no bread at all.

experimental group: brownies with bread

constants: same tupperware, placement, time, size.

Hoped this helped!

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What happens to the atomic mass of an element moving from left to right within a period​
JulsSmile [24]

Answer:

As you move across a period, the atomic mass increases because the atomic number also increases. ... The atomic mass for any given atom mainly comes from the mass of the protons and neutrons.

Explanation:

4 0
3 years ago
Which net ionic equation best represents the reaction that occurs when an aqueous solution of barium chloride is mixed with an a
vovangra [49]

Answer : The net ionic equation will be:

Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)

Explanation :

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.

Net ionic equation : In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The balanced molecular equation will be,

BaCl_2(aq)+Li_2SO_4(aq)\rightarrow 2LiCl(aq)+BaSO_4(s)

The complete ionic equation in separated aqueous solution will be,

Ba^{2+}(aq)+2Cl^-(aq)+2Li^+(aq)+SO_4^{2-}(aq)\rightarrow 2Li^+(aq)+2Cl^-(aq)+BaSO_4(s)

In this equation the species, Li^+\text{ and }Cl^{-} are the spectator ions.

By removing the spectator ions , we get the net ionic equation.

The net ionic equation will be:

Ba^{2+}(aq)+SO_4^{2-}(aq)\rightarrow BaSO_4(s)

6 0
3 years ago
A chemical change occurs when an egg cooks. What effect does cooking have on the physical properties of an egg?
fomenos
I'm not sure, but maybe burning point...
4 0
3 years ago
Please answer fast, shouldn't take long to do ^-^ (will give brainliest)
Anna [14]

Answer:

B

Explanation:

5 0
3 years ago
Determine the number of moles of gas in a 4.1L container at 341K with a pressure of 1.78 atm.
lozanna [386]

Answer:

0.26 mol

Explanation:

using general gas equation

PV=nRT

V=4.1litre= 4.1 dm³

P= 1.78 atm

R= 0.0821

PUT VALUES

8 0
3 years ago
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