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  • Waiting for answer What is the charge for all elements in Group 1A?

    ##1+## For starters, it's worth noting that located in group 1 of are called alkali metals . All these elements have one valence electron , i.e. one electron located in their out...

  • Waiting for answer Why are mole ratios central to stoichiometric calculations?

    are central to stoichiometric calculations because they bridge the gap when we have to convert between the mass of one substance and the mass of another. refers to the coefficients of a balanced chemical reaction equation. The show the proportions of reactant and product molecules. For exampl...

  • Waiting for answer What is the difference between the Pearson correlation coeff...

    Pearson's product-moment correlation is used on two continuous variables that are not non-linearly related; Spearman's rho is used on ordinal data, but also works for monotonic relationships....

  • Waiting for answer How do plants reproduce asexually?

    plants have a male and female parts in their flowers, these are the stamen and pistil. once the pollen been taken by bees and they go over flowers, these pollens trap in male part of the flower which is stamen i think.. then it goes over and over again.

  • Waiting for answer What does an atomic number tell you about an element?

    It tells you the number of protons in an element, and electrons - if the element is neutral. An element's tells you its position on , which indicates various aspects or trends of th...

  • Waiting for answer What organs and tissues make up the integumentary system?

    Sweat, oil glands, nails, skin, and hair. The protects against injury, disease, and regulates body temperature. Sweat, oil glands, nails, skin, and hair comprise the integumentary s...

  • Waiting for answer What is Ka in chemistry?

    This is the acid dissociation constant, which quantifies the extent of acid dissociation in a , typically water. An acid, ##HA##, undergoes the following equilibrium in water: ##HA(...

  • Waiting for answer Is division of rational numbers associative?

    No, it is not; for example, ##(1 divide 2) divide 3=1/2 divide 3=1/6##, but ##1 divide (2 divide 3)=1 divide 2/3=3/2##. I hope that this was helpful.

  • Waiting for answer What is the width of a rectangular prism when the surface ar...

    ##4 meters## Given: ##SA=208 m^2## ##L=6m## ##H=8m## Missing: ##W=?## substitute all the given to the formula for surface area of a rectangular prism is ##SA=2(LW+LH+WH)## ##208...

  • Waiting for answer What is the difference between a parody, a spoof, and a sati...

    parody-statement appears to be absurd but contains a deep meaning satire-a device in literature where you criticize men and manners with the ideas of correcting them

  • Waiting for answer Why is smooth muscle called involuntary?

    Smooth muscle is called involuntary because it is innervated by nerves that do not require conscious thought to perform action potentials to move the muscle. For example, you don't have to think about beating your heart, contracting your diaphragm to breathe, or moving food through the GI tract. Th...

  • Waiting for answer How do homeotic genes regulate development in drosophila?

    Homeotic (selector) genes regulate other genes (realisator genes) to make sure the right structures develop in the right place. The challenge in the development of each multicellula...

  • Waiting for answer If the area of a right triangle is 15, what is its perimeter...

    Cant be determined Let the two sides of the right angled triangle have lengths a b. The third side has length =## (a^2 +b^2)^1/2 ##////// use Pythagoras Theorem Perimeter =## a...

  • Waiting for answer How many protons are in the nucleus of an atom of oxygen?

    The tells us how many protons are in the nucleus for any given element. Oxygen is atomic number 8. Therefore, its nucleus contains 8 protons. Protons are positively charged. On...

  • Waiting for answer How is the number of neutrons in an atom calculated?

    It has already been answered. As the person above said, to get the number of neutrons, you have to subtract the by the . ##"Mass number " - " Atomic Number " = " Number of Neutron...

  • Waiting for answer What is the definition of colloquial language?

    Colloquial language is informal, spoken language. It's the way you speak to friends or family members without giving any thought to what you are saying, as opposed to formal, spoken...

  • Waiting for answer 'Atoms of element X have 6 unpaired electrons. What could be...

    Yes, chromium could be one. Right from the start, you can guess that the unknown element must be a d-block element, or a transition metal. That must be the case because in order...

  • Waiting for answer What is the sin of 30 degrees?

    This is one of the basic right-angled triangles. In an equilateral triangle each angle is ##60^o## (and all the sides have equal length) From the image below: we can see that the ##sin(30^o) = 1/2##

  • Waiting for answer What is descent with modification?

    Populations experience random and systematic changes in genetics over multiple generations (decent) that can lead to adaptations to their environment (modifications). Random changes in genetic sequence occur primarily through . Systematic changes in genetic code exist in many forms: natural variati...

  • Waiting for answer How do you calculate the magnitude of displacement?

    For calculation of displacement, only the end points matter. He ends up 2.5 m above and 1.1 m to the side of his original postion. The displacement magnitude is |s| = √[2.5² + 1.1²] = 2.73 m. This is not the same as the total distance traveled, which is the sum of displacement magnitudes of each leg...

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